2 * collectd - src/configfile.c
3 * Copyright (C) 2005-2011 Florian octo Forster
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Florian octo Forster <octo at collectd.org>
25 * Sebastian tokkee Harl <sh at tokkee.org>
30 #include "liboconfig/oconfig.h"
34 #include "configfile.h"
35 #include "types_list.h"
36 #include "filter_chain.h"
40 #endif /* HAVE_WORDEXP_H */
44 #endif /* HAVE_FNMATCH_H */
48 #endif /* HAVE_LIBGEN_H */
50 #define ESCAPE_NULL(str) ((str) == NULL ? "(null)" : (str))
55 typedef struct cf_callback
58 int (*callback) (const char *, const char *);
62 struct cf_callback *next;
65 typedef struct cf_complex_callback_s
68 int (*callback) (oconfig_item_t *);
70 struct cf_complex_callback_s *next;
71 } cf_complex_callback_t;
73 typedef struct cf_value_map_s
76 int (*func) (const oconfig_item_t *);
79 typedef struct cf_global_option_s
87 * Prototypes of callback functions
89 static int dispatch_value_typesdb (const oconfig_item_t *ci);
90 static int dispatch_value_plugindir (const oconfig_item_t *ci);
91 static int dispatch_loadplugin (const oconfig_item_t *ci);
96 static cf_callback_t *first_callback = NULL;
97 static cf_complex_callback_t *complex_callback_head = NULL;
99 static cf_value_map_t cf_value_map[] =
101 {"TypesDB", dispatch_value_typesdb},
102 {"PluginDir", dispatch_value_plugindir},
103 {"LoadPlugin", dispatch_loadplugin}
105 static int cf_value_map_num = STATIC_ARRAY_SIZE (cf_value_map);
107 static cf_global_option_t cf_global_options[] =
109 {"BaseDir", NULL, PKGLOCALSTATEDIR},
110 {"PIDFile", NULL, PIDFILE},
111 {"Hostname", NULL, NULL},
112 {"FQDNLookup", NULL, "true"},
113 {"Interval", NULL, NULL},
114 {"ReadThreads", NULL, "5"},
115 {"WriteThreads", NULL, "5"},
116 {"WriteQueueLimitHigh", NULL, NULL},
117 {"WriteQueueLimitLow", NULL, NULL},
118 {"Timeout", NULL, "2"},
119 {"AutoLoadPlugin", NULL, "false"},
120 {"CollectInternalStats", NULL, "false"},
121 {"PreCacheChain", NULL, "PreCache"},
122 {"PostCacheChain", NULL, "PostCache"},
123 {"MaxReadInterval", NULL, "86400"}
125 static int cf_global_options_num = STATIC_ARRAY_SIZE (cf_global_options);
127 static int cf_default_typesdb = 1;
130 * Functions to handle register/unregister, search, and other plugin related
133 static cf_callback_t *cf_search (const char *type)
135 cf_callback_t *cf_cb;
140 for (cf_cb = first_callback; cf_cb != NULL; cf_cb = cf_cb->next)
141 if (strcasecmp (cf_cb->type, type) == 0)
147 static int cf_dispatch (const char *type, const char *orig_key,
148 const char *orig_value)
150 cf_callback_t *cf_cb;
151 plugin_ctx_t old_ctx;
157 DEBUG ("type = %s, key = %s, value = %s",
159 ESCAPE_NULL(orig_key),
160 ESCAPE_NULL(orig_value));
162 if ((cf_cb = cf_search (type)) == NULL)
164 WARNING ("Found a configuration for the `%s' plugin, but "
165 "the plugin isn't loaded or didn't register "
166 "a configuration callback.", type);
170 if ((key = strdup (orig_key)) == NULL)
172 if ((value = strdup (orig_value)) == NULL)
180 old_ctx = plugin_set_ctx (cf_cb->ctx);
182 for (i = 0; i < cf_cb->keys_num; i++)
184 if ((cf_cb->keys[i] != NULL)
185 && (strcasecmp (cf_cb->keys[i], key) == 0))
187 ret = (*cf_cb->callback) (key, value);
192 plugin_set_ctx (old_ctx);
194 if (i >= cf_cb->keys_num)
195 WARNING ("Plugin `%s' did not register for value `%s'.", type, key);
200 DEBUG ("cf_dispatch: return (%i)", ret);
203 } /* int cf_dispatch */
205 static int dispatch_global_option (const oconfig_item_t *ci)
207 if (ci->values_num != 1)
209 if (ci->values[0].type == OCONFIG_TYPE_STRING)
210 return (global_option_set (ci->key, ci->values[0].value.string));
211 else if (ci->values[0].type == OCONFIG_TYPE_NUMBER)
214 ssnprintf (tmp, sizeof (tmp), "%lf", ci->values[0].value.number);
215 return (global_option_set (ci->key, tmp));
217 else if (ci->values[0].type == OCONFIG_TYPE_BOOLEAN)
219 if (ci->values[0].value.boolean)
220 return (global_option_set (ci->key, "true"));
222 return (global_option_set (ci->key, "false"));
226 } /* int dispatch_global_option */
228 static int dispatch_value_typesdb (const oconfig_item_t *ci)
232 assert (strcasecmp (ci->key, "TypesDB") == 0);
234 cf_default_typesdb = 0;
236 if (ci->values_num < 1) {
237 ERROR ("configfile: `TypesDB' needs at least one argument.");
241 for (i = 0; i < ci->values_num; ++i)
243 if (OCONFIG_TYPE_STRING != ci->values[i].type) {
244 WARNING ("configfile: TypesDB: Skipping %i. argument which "
245 "is not a string.", i + 1);
249 read_types_list (ci->values[i].value.string);
252 } /* int dispatch_value_typesdb */
254 static int dispatch_value_plugindir (const oconfig_item_t *ci)
256 assert (strcasecmp (ci->key, "PluginDir") == 0);
258 if (ci->values_num != 1)
260 if (ci->values[0].type != OCONFIG_TYPE_STRING)
263 plugin_set_dir (ci->values[0].value.string);
267 static int dispatch_loadplugin (const oconfig_item_t *ci)
271 unsigned int flags = 0;
273 plugin_ctx_t old_ctx;
276 assert (strcasecmp (ci->key, "LoadPlugin") == 0);
278 if (ci->values_num != 1)
280 if (ci->values[0].type != OCONFIG_TYPE_STRING)
283 name = ci->values[0].value.string;
284 if (strcmp ("libvirt", name) == 0)
287 /* default to the global interval set before loading this plugin */
288 memset (&ctx, 0, sizeof (ctx));
289 ctx.interval = cf_get_default_interval ();
291 for (i = 0; i < ci->children_num; ++i) {
292 if (strcasecmp("Globals", ci->children[i].key) == 0)
293 cf_util_get_flag (ci->children + i, &flags, PLUGIN_FLAGS_GLOBAL);
294 else if (strcasecmp ("Interval", ci->children[i].key) == 0) {
295 if (cf_util_get_cdtime (ci->children + i, &ctx.interval) != 0) {
296 /* cf_util_get_cdtime will log an error */
301 WARNING("Ignoring unknown LoadPlugin option \"%s\" "
303 ci->children[i].key, ci->values[0].value.string);
307 old_ctx = plugin_set_ctx (ctx);
308 ret_val = plugin_load (name, (uint32_t) flags);
309 /* reset to the "global" context */
310 plugin_set_ctx (old_ctx);
313 } /* int dispatch_value_loadplugin */
315 static int dispatch_value_plugin (const char *plugin, oconfig_item_t *ci)
323 buffer_free = sizeof (buffer);
325 for (i = 0; i < ci->values_num; i++)
329 if (ci->values[i].type == OCONFIG_TYPE_STRING)
330 status = ssnprintf (buffer_ptr, buffer_free, " %s",
331 ci->values[i].value.string);
332 else if (ci->values[i].type == OCONFIG_TYPE_NUMBER)
333 status = ssnprintf (buffer_ptr, buffer_free, " %lf",
334 ci->values[i].value.number);
335 else if (ci->values[i].type == OCONFIG_TYPE_BOOLEAN)
336 status = ssnprintf (buffer_ptr, buffer_free, " %s",
337 ci->values[i].value.boolean
340 if ((status < 0) || (status >= buffer_free))
342 buffer_free -= status;
343 buffer_ptr += status;
345 /* skip the initial space */
346 buffer_ptr = buffer + 1;
348 return (cf_dispatch (plugin, ci->key, buffer_ptr));
349 } /* int dispatch_value_plugin */
351 static int dispatch_value (const oconfig_item_t *ci)
356 for (i = 0; i < cf_value_map_num; i++)
357 if (strcasecmp (cf_value_map[i].key, ci->key) == 0)
359 ret = cf_value_map[i].func (ci);
363 for (i = 0; i < cf_global_options_num; i++)
364 if (strcasecmp (cf_global_options[i].key, ci->key) == 0)
366 ret = dispatch_global_option (ci);
371 } /* int dispatch_value */
373 static int dispatch_block_plugin (oconfig_item_t *ci)
378 cf_complex_callback_t *cb;
380 if (strcasecmp (ci->key, "Plugin") != 0)
382 if (ci->values_num < 1)
384 if (ci->values[0].type != OCONFIG_TYPE_STRING)
387 name = ci->values[0].value.string;
388 if (strcmp ("libvirt", name) == 0)
390 /* TODO(octo): Remove this legacy. */
391 WARNING ("The \"libvirt\" plugin has been renamed to \"virt\" to avoid problems with the build system. "
392 "Your configuration is still using the old name. "
393 "Please change it to use \"virt\" as soon as possible. "
394 "This compatibility code will go away eventually.");
398 if (IS_TRUE (global_option_get ("AutoLoadPlugin")))
401 plugin_ctx_t old_ctx;
404 /* default to the global interval set before loading this plugin */
405 memset (&ctx, 0, sizeof (ctx));
406 ctx.interval = cf_get_default_interval ();
408 old_ctx = plugin_set_ctx (ctx);
409 status = plugin_load (name, /* flags = */ 0);
410 /* reset to the "global" context */
411 plugin_set_ctx (old_ctx);
415 ERROR ("Automatically loading plugin \"%s\" failed "
416 "with status %i.", name, status);
421 /* Check for a complex callback first */
422 for (cb = complex_callback_head; cb != NULL; cb = cb->next)
424 if (strcasecmp (name, cb->type) == 0)
426 plugin_ctx_t old_ctx;
429 old_ctx = plugin_set_ctx (cb->ctx);
430 ret_val = (cb->callback (ci));
431 plugin_set_ctx (old_ctx);
436 /* Hm, no complex plugin found. Dispatch the values one by one */
437 for (i = 0; i < ci->children_num; i++)
439 if (ci->children[i].children == NULL)
440 dispatch_value_plugin (name, ci->children + i);
443 WARNING ("There is a `%s' block within the "
444 "configuration for the %s plugin. "
445 "The plugin either only expects "
446 "\"simple\" configuration statements "
447 "or wasn't loaded using `LoadPlugin'."
448 " Please check your configuration.",
449 ci->children[i].key, name);
457 static int dispatch_block (oconfig_item_t *ci)
459 if (strcasecmp (ci->key, "LoadPlugin") == 0)
460 return (dispatch_loadplugin (ci));
461 else if (strcasecmp (ci->key, "Plugin") == 0)
462 return (dispatch_block_plugin (ci));
463 else if (strcasecmp (ci->key, "Chain") == 0)
464 return (fc_configure (ci));
469 static int cf_ci_replace_child (oconfig_item_t *dst, oconfig_item_t *src,
472 oconfig_item_t *temp;
475 assert (offset >= 0);
476 assert (dst->children_num > offset);
478 /* Free the memory used by the replaced child. Usually that's the
479 * `Include "blah"' statement. */
480 temp = dst->children + offset;
481 for (i = 0; i < temp->values_num; i++)
483 if (temp->values[i].type == OCONFIG_TYPE_STRING)
485 sfree (temp->values[i].value.string);
488 sfree (temp->values);
491 /* If (src->children_num == 0) the array size is decreased. If offset
492 * is _not_ the last element, (offset < (dst->children_num - 1)), then
493 * we need to move the trailing elements before resizing the array. */
494 if ((src->children_num == 0) && (offset < (dst->children_num - 1)))
496 int nmemb = dst->children_num - (offset + 1);
497 memmove (dst->children + offset, dst->children + offset + 1,
498 sizeof (oconfig_item_t) * nmemb);
501 /* Resize the memory containing the children to be big enough to hold
503 if (dst->children_num + src->children_num - 1 == 0)
505 dst->children_num = 0;
509 temp = (oconfig_item_t *) realloc (dst->children,
510 sizeof (oconfig_item_t)
511 * (dst->children_num + src->children_num - 1));
514 ERROR ("configfile: realloc failed.");
517 dst->children = temp;
519 /* If there are children behind the include statement, and they have
520 * not yet been moved because (src->children_num == 0), then move them
521 * to the end of the list, so that the new children have room before
523 if ((src->children_num > 0)
524 && ((dst->children_num - (offset + 1)) > 0))
526 int nmemb = dst->children_num - (offset + 1);
527 int old_offset = offset + 1;
528 int new_offset = offset + src->children_num;
530 memmove (dst->children + new_offset,
531 dst->children + old_offset,
532 sizeof (oconfig_item_t) * nmemb);
535 /* Last but not least: If there are new children, copy them to the
536 * memory reserved for them. */
537 if (src->children_num > 0)
539 memcpy (dst->children + offset,
541 sizeof (oconfig_item_t) * src->children_num);
544 /* Update the number of children. */
545 dst->children_num += (src->children_num - 1);
548 } /* int cf_ci_replace_child */
550 static int cf_ci_append_children (oconfig_item_t *dst, oconfig_item_t *src)
552 oconfig_item_t *temp;
554 if ((src == NULL) || (src->children_num == 0))
557 temp = (oconfig_item_t *) realloc (dst->children,
558 sizeof (oconfig_item_t)
559 * (dst->children_num + src->children_num));
562 ERROR ("configfile: realloc failed.");
565 dst->children = temp;
567 memcpy (dst->children + dst->children_num,
569 sizeof (oconfig_item_t)
570 * src->children_num);
571 dst->children_num += src->children_num;
574 } /* int cf_ci_append_children */
576 #define CF_MAX_DEPTH 8
577 static oconfig_item_t *cf_read_generic (const char *path,
578 const char *pattern, int depth);
580 static int cf_include_all (oconfig_item_t *root, int depth)
584 for (i = 0; i < root->children_num; i++)
589 char *pattern = NULL;
593 if (strcasecmp (root->children[i].key, "Include") != 0)
596 old = root->children + i;
598 if ((old->values_num != 1)
599 || (old->values[0].type != OCONFIG_TYPE_STRING))
601 ERROR ("configfile: `Include' needs exactly one string argument.");
605 for (j = 0; j < old->children_num; ++j)
607 oconfig_item_t *child = old->children + j;
609 if (strcasecmp (child->key, "Filter") == 0)
610 cf_util_get_string (child, &pattern);
612 ERROR ("configfile: Option `%s' not allowed in <Include> block.",
616 new = cf_read_generic (old->values[0].value.string, pattern, depth + 1);
622 /* Now replace the i'th child in `root' with `new'. */
623 if (cf_ci_replace_child (root, new, i) < 0)
626 /* ... and go back to the new i'th child. */
631 } /* for (i = 0; i < root->children_num; i++) */
634 } /* int cf_include_all */
636 static oconfig_item_t *cf_read_file (const char *file,
637 const char *pattern, int depth)
639 oconfig_item_t *root;
642 assert (depth < CF_MAX_DEPTH);
644 if (pattern != NULL) {
645 #if HAVE_FNMATCH_H && HAVE_LIBGEN_H
646 char *tmp = sstrdup (file);
647 char *filename = basename (tmp);
649 if ((filename != NULL) && (fnmatch (pattern, filename, 0) != 0)) {
650 DEBUG ("configfile: Not including `%s' because it "
651 "does not match pattern `%s'.",
659 ERROR ("configfile: Cannot apply pattern filter '%s' "
660 "to file '%s': functions basename() and / or "
661 "fnmatch() not available.", pattern, file);
662 #endif /* HAVE_FNMATCH_H && HAVE_LIBGEN_H */
665 root = oconfig_parse_file (file);
668 ERROR ("configfile: Cannot read file `%s'.", file);
672 status = cf_include_all (root, depth);
680 } /* oconfig_item_t *cf_read_file */
682 static int cf_compare_string (const void *p1, const void *p2)
684 return strcmp (*(const char **) p1, *(const char **) p2);
687 static oconfig_item_t *cf_read_dir (const char *dir,
688 const char *pattern, int depth)
690 oconfig_item_t *root = NULL;
693 char **filenames = NULL;
694 int filenames_num = 0;
698 assert (depth < CF_MAX_DEPTH);
704 ERROR ("configfile: opendir failed: %s",
705 sstrerror (errno, errbuf, sizeof (errbuf)));
709 root = (oconfig_item_t *) malloc (sizeof (oconfig_item_t));
712 ERROR ("configfile: malloc failed.");
715 memset (root, 0, sizeof (oconfig_item_t));
717 while ((de = readdir (dh)) != NULL)
722 if ((de->d_name[0] == '.') || (de->d_name[0] == 0))
725 status = ssnprintf (name, sizeof (name), "%s/%s",
727 if ((status < 0) || ((size_t) status >= sizeof (name)))
729 ERROR ("configfile: Not including `%s/%s' because its"
730 " name is too long.",
732 for (i = 0; i < filenames_num; ++i)
740 tmp = (char **) realloc (filenames,
741 filenames_num * sizeof (*filenames));
743 ERROR ("configfile: realloc failed.");
744 for (i = 0; i < filenames_num - 1; ++i)
752 filenames[filenames_num - 1] = sstrdup (name);
755 qsort ((void *) filenames, filenames_num, sizeof (*filenames),
758 for (i = 0; i < filenames_num; ++i)
760 oconfig_item_t *temp;
761 char *name = filenames[i];
763 temp = cf_read_generic (name, pattern, depth);
766 /* An error should already have been reported. */
771 cf_ci_append_children (root, temp);
772 sfree (temp->children);
780 } /* oconfig_item_t *cf_read_dir */
785 * Path is stat'ed and either cf_read_file or cf_read_dir is called
788 * There are two versions of this function: If `wordexp' exists shell wildcards
789 * will be expanded and the function will include all matches found. If
790 * `wordexp' (or, more precisely, it's header file) is not available the
791 * simpler function is used which does not do any such expansion.
794 static oconfig_item_t *cf_read_generic (const char *path,
795 const char *pattern, int depth)
797 oconfig_item_t *root = NULL;
799 const char *path_ptr;
803 if (depth >= CF_MAX_DEPTH)
805 ERROR ("configfile: Not including `%s' because the maximum "
806 "nesting depth has been reached.", path);
810 status = wordexp (path, &we, WRDE_NOCMD);
813 ERROR ("configfile: wordexp (%s) failed.", path);
817 root = (oconfig_item_t *) malloc (sizeof (oconfig_item_t));
820 ERROR ("configfile: malloc failed.");
823 memset (root, '\0', sizeof (oconfig_item_t));
825 /* wordexp() might return a sorted list already. That's not
826 * documented though, so let's make sure we get what we want. */
827 qsort ((void *) we.we_wordv, we.we_wordc, sizeof (*we.we_wordv),
830 for (i = 0; i < we.we_wordc; i++)
832 oconfig_item_t *temp;
835 path_ptr = we.we_wordv[i];
837 status = stat (path_ptr, &statbuf);
841 WARNING ("configfile: stat (%s) failed: %s",
843 sstrerror (errno, errbuf, sizeof (errbuf)));
847 if (S_ISREG (statbuf.st_mode))
848 temp = cf_read_file (path_ptr, pattern, depth);
849 else if (S_ISDIR (statbuf.st_mode))
850 temp = cf_read_dir (path_ptr, pattern, depth);
853 WARNING ("configfile: %s is neither a file nor a "
863 cf_ci_append_children (root, temp);
864 sfree (temp->children);
871 } /* oconfig_item_t *cf_read_generic */
872 /* #endif HAVE_WORDEXP_H */
874 #else /* if !HAVE_WORDEXP_H */
875 static oconfig_item_t *cf_read_generic (const char *path,
876 const char *pattern, int depth)
881 if (depth >= CF_MAX_DEPTH)
883 ERROR ("configfile: Not including `%s' because the maximum "
884 "nesting depth has been reached.", path);
888 status = stat (path, &statbuf);
892 ERROR ("configfile: stat (%s) failed: %s",
894 sstrerror (errno, errbuf, sizeof (errbuf)));
898 if (S_ISREG (statbuf.st_mode))
899 return (cf_read_file (path, pattern, depth));
900 else if (S_ISDIR (statbuf.st_mode))
901 return (cf_read_dir (path, pattern, depth));
903 ERROR ("configfile: %s is neither a file nor a directory.", path);
905 } /* oconfig_item_t *cf_read_generic */
906 #endif /* !HAVE_WORDEXP_H */
911 int global_option_set (const char *option, const char *value)
915 DEBUG ("option = %s; value = %s;", option, value);
917 for (i = 0; i < cf_global_options_num; i++)
918 if (strcasecmp (cf_global_options[i].key, option) == 0)
921 if (i >= cf_global_options_num)
924 if (strcasecmp (option, "PIDFile") == 0 && pidfile_from_cli == 1)
926 DEBUG ("Configfile: Ignoring `PIDFILE' option because "
927 "command-line option `-P' take precedence.");
931 sfree (cf_global_options[i].value);
934 cf_global_options[i].value = strdup (value);
936 cf_global_options[i].value = NULL;
941 const char *global_option_get (const char *option)
945 for (i = 0; i < cf_global_options_num; i++)
946 if (strcasecmp (cf_global_options[i].key, option) == 0)
949 if (i >= cf_global_options_num)
952 return ((cf_global_options[i].value != NULL)
953 ? cf_global_options[i].value
954 : cf_global_options[i].def);
955 } /* char *global_option_get */
957 long global_option_get_long (const char *option, long default_value)
962 str = global_option_get (option);
964 return (default_value);
967 value = strtol (str, /* endptr = */ NULL, /* base = */ 0);
969 return (default_value);
972 } /* char *global_option_get_long */
974 cdtime_t global_option_get_time (const char *name, cdtime_t def) /* {{{ */
980 optstr = global_option_get (name);
985 v = strtod (optstr, &endptr);
986 if ((endptr == NULL) || (*endptr != 0) || (errno != 0))
991 return (DOUBLE_TO_CDTIME_T (v));
992 } /* }}} cdtime_t global_option_get_time */
994 cdtime_t cf_get_default_interval (void)
996 return (global_option_get_time ("Interval",
997 DOUBLE_TO_CDTIME_T (COLLECTD_DEFAULT_INTERVAL)));
1000 void cf_unregister (const char *type)
1002 cf_callback_t *this, *prev;
1004 for (prev = NULL, this = first_callback;
1006 prev = this, this = this->next)
1007 if (strcasecmp (this->type, type) == 0)
1010 first_callback = this->next;
1012 prev->next = this->next;
1017 } /* void cf_unregister */
1019 void cf_unregister_complex (const char *type)
1021 cf_complex_callback_t *this, *prev;
1023 for (prev = NULL, this = complex_callback_head;
1025 prev = this, this = this->next)
1026 if (strcasecmp (this->type, type) == 0)
1029 complex_callback_head = this->next;
1031 prev->next = this->next;
1037 } /* void cf_unregister */
1039 void cf_register (const char *type,
1040 int (*callback) (const char *, const char *),
1041 const char **keys, int keys_num)
1043 cf_callback_t *cf_cb;
1045 /* Remove this module from the list, if it already exists */
1046 cf_unregister (type);
1048 /* This pointer will be free'd in `cf_unregister' */
1049 if ((cf_cb = (cf_callback_t *) malloc (sizeof (cf_callback_t))) == NULL)
1053 cf_cb->callback = callback;
1055 cf_cb->keys_num = keys_num;
1056 cf_cb->ctx = plugin_get_ctx ();
1058 cf_cb->next = first_callback;
1059 first_callback = cf_cb;
1060 } /* void cf_register */
1062 int cf_register_complex (const char *type, int (*callback) (oconfig_item_t *))
1064 cf_complex_callback_t *new;
1066 new = (cf_complex_callback_t *) malloc (sizeof (cf_complex_callback_t));
1070 new->type = strdup (type);
1071 if (new->type == NULL)
1077 new->callback = callback;
1080 new->ctx = plugin_get_ctx ();
1082 if (complex_callback_head == NULL)
1084 complex_callback_head = new;
1088 cf_complex_callback_t *last = complex_callback_head;
1089 while (last->next != NULL)
1095 } /* int cf_register_complex */
1097 int cf_read (char *filename)
1099 oconfig_item_t *conf;
1102 conf = cf_read_generic (filename, /* pattern = */ NULL, /* depth = */ 0);
1105 ERROR ("Unable to read config file %s.", filename);
1108 else if (conf->children_num == 0)
1110 ERROR ("Configuration file %s is empty.", filename);
1111 oconfig_free (conf);
1115 for (i = 0; i < conf->children_num; i++)
1117 if (conf->children[i].children == NULL)
1118 dispatch_value (conf->children + i);
1120 dispatch_block (conf->children + i);
1123 oconfig_free (conf);
1125 /* Read the default types.db if no `TypesDB' option was given. */
1126 if (cf_default_typesdb)
1127 read_types_list (PKGDATADIR"/types.db");
1132 /* Assures the config option is a string, duplicates it and returns the copy in
1133 * "ret_string". If necessary "*ret_string" is freed first. Returns zero upon
1135 int cf_util_get_string (const oconfig_item_t *ci, char **ret_string) /* {{{ */
1139 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1141 ERROR ("cf_util_get_string: The %s option requires "
1142 "exactly one string argument.", ci->key);
1146 string = strdup (ci->values[0].value.string);
1150 if (*ret_string != NULL)
1151 sfree (*ret_string);
1152 *ret_string = string;
1155 } /* }}} int cf_util_get_string */
1157 /* Assures the config option is a string and copies it to the provided buffer.
1158 * Assures null-termination. */
1159 int cf_util_get_string_buffer (const oconfig_item_t *ci, char *buffer, /* {{{ */
1162 if ((ci == NULL) || (buffer == NULL) || (buffer_size < 1))
1165 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1167 ERROR ("cf_util_get_string_buffer: The %s option requires "
1168 "exactly one string argument.", ci->key);
1172 strncpy (buffer, ci->values[0].value.string, buffer_size);
1173 buffer[buffer_size - 1] = 0;
1176 } /* }}} int cf_util_get_string_buffer */
1178 /* Assures the config option is a number and returns it as an int. */
1179 int cf_util_get_int (const oconfig_item_t *ci, int *ret_value) /* {{{ */
1181 if ((ci == NULL) || (ret_value == NULL))
1184 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
1186 ERROR ("cf_util_get_int: The %s option requires "
1187 "exactly one numeric argument.", ci->key);
1191 *ret_value = (int) ci->values[0].value.number;
1194 } /* }}} int cf_util_get_int */
1196 int cf_util_get_double (const oconfig_item_t *ci, double *ret_value) /* {{{ */
1198 if ((ci == NULL) || (ret_value == NULL))
1201 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
1203 ERROR ("cf_util_get_double: The %s option requires "
1204 "exactly one numeric argument.", ci->key);
1208 *ret_value = ci->values[0].value.number;
1211 } /* }}} int cf_util_get_double */
1213 int cf_util_get_boolean (const oconfig_item_t *ci, _Bool *ret_bool) /* {{{ */
1215 if ((ci == NULL) || (ret_bool == NULL))
1218 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
1220 ERROR ("cf_util_get_boolean: The %s option requires "
1221 "exactly one boolean argument.", ci->key);
1225 *ret_bool = ci->values[0].value.boolean ? 1 : 0;
1228 } /* }}} int cf_util_get_boolean */
1230 int cf_util_get_flag (const oconfig_item_t *ci, /* {{{ */
1231 unsigned int *ret_value, unsigned int flag)
1236 if (ret_value == NULL)
1240 status = cf_util_get_boolean (ci, &b);
1250 *ret_value &= ~flag;
1254 } /* }}} int cf_util_get_flag */
1256 /* Assures that the config option is a string or a number if the correct range
1257 * of 1-65535. The string is then converted to a port number using
1258 * `service_name_to_port_number' and returned.
1259 * Returns the port number in the range [1-65535] or less than zero upon
1261 int cf_util_get_port_number (const oconfig_item_t *ci) /* {{{ */
1265 if ((ci->values_num != 1)
1266 || ((ci->values[0].type != OCONFIG_TYPE_STRING)
1267 && (ci->values[0].type != OCONFIG_TYPE_NUMBER)))
1269 ERROR ("cf_util_get_port_number: The \"%s\" option requires "
1270 "exactly one string argument.", ci->key);
1274 if (ci->values[0].type == OCONFIG_TYPE_STRING)
1275 return (service_name_to_port_number (ci->values[0].value.string));
1277 assert (ci->values[0].type == OCONFIG_TYPE_NUMBER);
1278 tmp = (int) (ci->values[0].value.number + 0.5);
1279 if ((tmp < 1) || (tmp > 65535))
1281 ERROR ("cf_util_get_port_number: The \"%s\" option requires "
1282 "a service name or a port number. The number "
1283 "you specified, %i, is not in the valid "
1284 "range of 1-65535.",
1290 } /* }}} int cf_util_get_port_number */
1292 int cf_util_get_service (const oconfig_item_t *ci, char **ret_string) /* {{{ */
1298 if (ci->values_num != 1)
1300 ERROR ("cf_util_get_service: The %s option requires exactly "
1301 "one argument.", ci->key);
1305 if (ci->values[0].type == OCONFIG_TYPE_STRING)
1306 return (cf_util_get_string (ci, ret_string));
1307 if (ci->values[0].type != OCONFIG_TYPE_NUMBER)
1309 ERROR ("cf_util_get_service: The %s option requires "
1310 "exactly one string or numeric argument.",
1315 status = cf_util_get_int (ci, &port);
1318 else if ((port < 1) || (port > 65535))
1320 ERROR ("cf_util_get_service: The port number given "
1321 "for the %s option is out of "
1322 "range (%i).", ci->key, port);
1326 service = malloc (6);
1327 if (service == NULL)
1329 ERROR ("cf_util_get_service: Out of memory.");
1332 ssnprintf (service, 6, "%i", port);
1334 sfree (*ret_string);
1335 *ret_string = service;
1338 } /* }}} int cf_util_get_service */
1340 int cf_util_get_cdtime (const oconfig_item_t *ci, cdtime_t *ret_value) /* {{{ */
1342 if ((ci == NULL) || (ret_value == NULL))
1345 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
1347 ERROR ("cf_util_get_cdtime: The %s option requires "
1348 "exactly one numeric argument.", ci->key);
1352 if (ci->values[0].value.number < 0.0)
1354 ERROR ("cf_util_get_cdtime: The numeric argument of the %s "
1355 "option must not be negative.", ci->key);
1359 *ret_value = DOUBLE_TO_CDTIME_T (ci->values[0].value.number);
1362 } /* }}} int cf_util_get_cdtime */