2 * collectd - src/configfile.c
3 * Copyright (C) 2005-2011 Florian octo Forster
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Florian octo Forster <octo at collectd.org>
21 * Sebastian tokkee Harl <sh at tokkee.org>
26 #include "liboconfig/oconfig.h"
30 #include "configfile.h"
31 #include "types_list.h"
32 #include "filter_chain.h"
36 #endif /* HAVE_WORDEXP_H */
38 #define ESCAPE_NULL(str) ((str) == NULL ? "(null)" : (str))
43 typedef struct cf_callback
46 int (*callback) (const char *, const char *);
50 struct cf_callback *next;
53 typedef struct cf_complex_callback_s
56 int (*callback) (oconfig_item_t *);
58 struct cf_complex_callback_s *next;
59 } cf_complex_callback_t;
61 typedef struct cf_value_map_s
64 int (*func) (const oconfig_item_t *);
67 typedef struct cf_global_option_s
75 * Prototypes of callback functions
77 static int dispatch_value_typesdb (const oconfig_item_t *ci);
78 static int dispatch_value_plugindir (const oconfig_item_t *ci);
79 static int dispatch_loadplugin (const oconfig_item_t *ci);
84 static cf_callback_t *first_callback = NULL;
85 static cf_complex_callback_t *complex_callback_head = NULL;
87 static cf_value_map_t cf_value_map[] =
89 {"TypesDB", dispatch_value_typesdb},
90 {"PluginDir", dispatch_value_plugindir},
91 {"LoadPlugin", dispatch_loadplugin}
93 static int cf_value_map_num = STATIC_ARRAY_LEN (cf_value_map);
95 static cf_global_option_t cf_global_options[] =
97 {"BaseDir", NULL, PKGLOCALSTATEDIR},
98 {"PIDFile", NULL, PIDFILE},
99 {"Hostname", NULL, NULL},
100 {"FQDNLookup", NULL, "true"},
101 {"Interval", NULL, NULL},
102 {"ReadThreads", NULL, "5"},
103 {"Timeout", NULL, "2"},
104 {"PreCacheChain", NULL, "PreCache"},
105 {"PostCacheChain", NULL, "PostCache"}
107 static int cf_global_options_num = STATIC_ARRAY_LEN (cf_global_options);
109 static int cf_default_typesdb = 1;
112 * Functions to handle register/unregister, search, and other plugin related
115 static cf_callback_t *cf_search (const char *type)
117 cf_callback_t *cf_cb;
122 for (cf_cb = first_callback; cf_cb != NULL; cf_cb = cf_cb->next)
123 if (strcasecmp (cf_cb->type, type) == 0)
129 static int cf_dispatch (const char *type, const char *orig_key,
130 const char *orig_value)
132 cf_callback_t *cf_cb;
133 plugin_ctx_t old_ctx;
139 DEBUG ("type = %s, key = %s, value = %s",
141 ESCAPE_NULL(orig_key),
142 ESCAPE_NULL(orig_value));
144 if ((cf_cb = cf_search (type)) == NULL)
146 WARNING ("Found a configuration for the `%s' plugin, but "
147 "the plugin isn't loaded or didn't register "
148 "a configuration callback.", type);
152 if ((key = strdup (orig_key)) == NULL)
154 if ((value = strdup (orig_value)) == NULL)
162 old_ctx = plugin_set_ctx (cf_cb->ctx);
164 for (i = 0; i < cf_cb->keys_num; i++)
166 if ((cf_cb->keys[i] != NULL)
167 && (strcasecmp (cf_cb->keys[i], key) == 0))
169 ret = (*cf_cb->callback) (key, value);
174 plugin_set_ctx (old_ctx);
176 if (i >= cf_cb->keys_num)
177 WARNING ("Plugin `%s' did not register for value `%s'.", type, key);
182 DEBUG ("cf_dispatch: return (%i)", ret);
185 } /* int cf_dispatch */
187 static int dispatch_global_option (const oconfig_item_t *ci)
189 if (ci->values_num != 1)
191 if (ci->values[0].type == OCONFIG_TYPE_STRING)
192 return (global_option_set (ci->key, ci->values[0].value.string));
193 else if (ci->values[0].type == OCONFIG_TYPE_NUMBER)
196 ssnprintf (tmp, sizeof (tmp), "%lf", ci->values[0].value.number);
197 return (global_option_set (ci->key, tmp));
199 else if (ci->values[0].type == OCONFIG_TYPE_BOOLEAN)
201 if (ci->values[0].value.boolean)
202 return (global_option_set (ci->key, "true"));
204 return (global_option_set (ci->key, "false"));
208 } /* int dispatch_global_option */
210 static int dispatch_value_typesdb (const oconfig_item_t *ci)
214 assert (strcasecmp (ci->key, "TypesDB") == 0);
216 cf_default_typesdb = 0;
218 if (ci->values_num < 1) {
219 ERROR ("configfile: `TypesDB' needs at least one argument.");
223 for (i = 0; i < ci->values_num; ++i)
225 if (OCONFIG_TYPE_STRING != ci->values[i].type) {
226 WARNING ("configfile: TypesDB: Skipping %i. argument which "
227 "is not a string.", i + 1);
231 read_types_list (ci->values[i].value.string);
234 } /* int dispatch_value_typesdb */
236 static int dispatch_value_plugindir (const oconfig_item_t *ci)
238 assert (strcasecmp (ci->key, "PluginDir") == 0);
240 if (ci->values_num != 1)
242 if (ci->values[0].type != OCONFIG_TYPE_STRING)
245 plugin_set_dir (ci->values[0].value.string);
249 static int dispatch_loadplugin (const oconfig_item_t *ci)
253 unsigned int flags = 0;
255 plugin_ctx_t old_ctx;
258 assert (strcasecmp (ci->key, "LoadPlugin") == 0);
260 if (ci->values_num != 1)
262 if (ci->values[0].type != OCONFIG_TYPE_STRING)
265 name = ci->values[0].value.string;
267 /* default to the global interval set before loading this plugin */
268 memset (&ctx, 0, sizeof (ctx));
269 ctx.interval = cf_get_default_interval ();
272 * XXX: Magic at work:
274 * Some of the language bindings, for example the Python and Perl
275 * plugins, need to be able to export symbols to the scripts they run.
276 * For this to happen, the "Globals" flag needs to be set.
277 * Unfortunately, this technical detail is hard to explain to the
278 * average user and she shouldn't have to worry about this, ideally.
279 * So in order to save everyone's sanity use a different default for a
280 * handful of special plugins. --octo
282 if ((strcasecmp ("Perl", name) == 0)
283 || (strcasecmp ("Python", name) == 0))
284 flags |= PLUGIN_FLAGS_GLOBAL;
286 for (i = 0; i < ci->children_num; ++i) {
287 if (strcasecmp("Globals", ci->children[i].key) == 0)
288 cf_util_get_flag (ci->children + i, &flags, PLUGIN_FLAGS_GLOBAL);
289 else if (strcasecmp ("Interval", ci->children[i].key) == 0) {
290 double interval = 0.0;
292 if (cf_util_get_double (ci->children + i, &interval) != 0) {
293 /* cf_util_get_double will log an error */
297 ctx.interval = DOUBLE_TO_CDTIME_T (interval);
300 WARNING("Ignoring unknown LoadPlugin option \"%s\" "
302 ci->children[i].key, ci->values[0].value.string);
306 old_ctx = plugin_set_ctx (ctx);
307 ret_val = plugin_load (name, (uint32_t) flags);
308 /* reset to the "global" context */
309 plugin_set_ctx (old_ctx);
312 } /* int dispatch_value_loadplugin */
314 static int dispatch_value_plugin (const char *plugin, oconfig_item_t *ci)
322 buffer_free = sizeof (buffer);
324 for (i = 0; i < ci->values_num; i++)
328 if (ci->values[i].type == OCONFIG_TYPE_STRING)
329 status = ssnprintf (buffer_ptr, buffer_free, " %s",
330 ci->values[i].value.string);
331 else if (ci->values[i].type == OCONFIG_TYPE_NUMBER)
332 status = ssnprintf (buffer_ptr, buffer_free, " %lf",
333 ci->values[i].value.number);
334 else if (ci->values[i].type == OCONFIG_TYPE_BOOLEAN)
335 status = ssnprintf (buffer_ptr, buffer_free, " %s",
336 ci->values[i].value.boolean
339 if ((status < 0) || (status >= buffer_free))
341 buffer_free -= status;
342 buffer_ptr += status;
344 /* skip the initial space */
345 buffer_ptr = buffer + 1;
347 return (cf_dispatch (plugin, ci->key, buffer_ptr));
348 } /* int dispatch_value_plugin */
350 static int dispatch_value (const oconfig_item_t *ci)
355 for (i = 0; i < cf_value_map_num; i++)
356 if (strcasecmp (cf_value_map[i].key, ci->key) == 0)
358 ret = cf_value_map[i].func (ci);
362 for (i = 0; i < cf_global_options_num; i++)
363 if (strcasecmp (cf_global_options[i].key, ci->key) == 0)
365 ret = dispatch_global_option (ci);
370 } /* int dispatch_value */
372 static int dispatch_block_plugin (oconfig_item_t *ci)
377 cf_complex_callback_t *cb;
379 if (strcasecmp (ci->key, "Plugin") != 0)
381 if (ci->values_num < 1)
383 if (ci->values[0].type != OCONFIG_TYPE_STRING)
386 name = ci->values[0].value.string;
388 /* Check for a complex callback first */
389 for (cb = complex_callback_head; cb != NULL; cb = cb->next)
391 if (strcasecmp (name, cb->type) == 0)
393 plugin_ctx_t old_ctx;
396 old_ctx = plugin_set_ctx (cb->ctx);
397 ret_val = (cb->callback (ci));
398 plugin_set_ctx (old_ctx);
403 /* Hm, no complex plugin found. Dispatch the values one by one */
404 for (i = 0; i < ci->children_num; i++)
406 if (ci->children[i].children == NULL)
407 dispatch_value_plugin (name, ci->children + i);
410 WARNING ("There is a `%s' block within the "
411 "configuration for the %s plugin. "
412 "The plugin either only expects "
413 "\"simple\" configuration statements "
414 "or wasn't loaded using `LoadPlugin'."
415 " Please check your configuration.",
416 ci->children[i].key, name);
424 static int dispatch_block (oconfig_item_t *ci)
426 if (strcasecmp (ci->key, "LoadPlugin") == 0)
427 return (dispatch_loadplugin (ci));
428 else if (strcasecmp (ci->key, "Plugin") == 0)
429 return (dispatch_block_plugin (ci));
430 else if (strcasecmp (ci->key, "Chain") == 0)
431 return (fc_configure (ci));
436 static int cf_ci_replace_child (oconfig_item_t *dst, oconfig_item_t *src,
439 oconfig_item_t *temp;
442 assert (offset >= 0);
443 assert (dst->children_num > offset);
445 /* Free the memory used by the replaced child. Usually that's the
446 * `Include "blah"' statement. */
447 temp = dst->children + offset;
448 for (i = 0; i < temp->values_num; i++)
450 if (temp->values[i].type == OCONFIG_TYPE_STRING)
452 sfree (temp->values[i].value.string);
455 sfree (temp->values);
458 /* If (src->children_num == 0) the array size is decreased. If offset
459 * is _not_ the last element, (offset < (dst->children_num - 1)), then
460 * we need to move the trailing elements before resizing the array. */
461 if ((src->children_num == 0) && (offset < (dst->children_num - 1)))
463 int nmemb = dst->children_num - (offset + 1);
464 memmove (dst->children + offset, dst->children + offset + 1,
465 sizeof (oconfig_item_t) * nmemb);
468 /* Resize the memory containing the children to be big enough to hold
470 temp = (oconfig_item_t *) realloc (dst->children,
471 sizeof (oconfig_item_t)
472 * (dst->children_num + src->children_num - 1));
475 ERROR ("configfile: realloc failed.");
478 dst->children = temp;
480 /* If there are children behind the include statement, and they have
481 * not yet been moved because (src->children_num == 0), then move them
482 * to the end of the list, so that the new children have room before
484 if ((src->children_num > 0)
485 && ((dst->children_num - (offset + 1)) > 0))
487 int nmemb = dst->children_num - (offset + 1);
488 int old_offset = offset + 1;
489 int new_offset = offset + src->children_num;
491 memmove (dst->children + new_offset,
492 dst->children + old_offset,
493 sizeof (oconfig_item_t) * nmemb);
496 /* Last but not least: If there are new children, copy them to the
497 * memory reserved for them. */
498 if (src->children_num > 0)
500 memcpy (dst->children + offset,
502 sizeof (oconfig_item_t) * src->children_num);
505 /* Update the number of children. */
506 dst->children_num += (src->children_num - 1);
509 } /* int cf_ci_replace_child */
511 static int cf_ci_append_children (oconfig_item_t *dst, oconfig_item_t *src)
513 oconfig_item_t *temp;
515 if ((src == NULL) || (src->children_num == 0))
518 temp = (oconfig_item_t *) realloc (dst->children,
519 sizeof (oconfig_item_t)
520 * (dst->children_num + src->children_num));
523 ERROR ("configfile: realloc failed.");
526 dst->children = temp;
528 memcpy (dst->children + dst->children_num,
530 sizeof (oconfig_item_t)
531 * src->children_num);
532 dst->children_num += src->children_num;
535 } /* int cf_ci_append_children */
537 #define CF_MAX_DEPTH 8
538 static oconfig_item_t *cf_read_generic (const char *path, int depth);
540 static int cf_include_all (oconfig_item_t *root, int depth)
544 for (i = 0; i < root->children_num; i++)
549 /* Ignore all blocks, including `Include' blocks. */
550 if (root->children[i].children_num != 0)
553 if (strcasecmp (root->children[i].key, "Include") != 0)
556 old = root->children + i;
558 if ((old->values_num != 1)
559 || (old->values[0].type != OCONFIG_TYPE_STRING))
561 ERROR ("configfile: `Include' needs exactly one string argument.");
565 new = cf_read_generic (old->values[0].value.string, depth + 1);
569 /* Now replace the i'th child in `root' with `new'. */
570 cf_ci_replace_child (root, new, i);
572 /* ... and go back to the new i'th child. */
577 } /* for (i = 0; i < root->children_num; i++) */
580 } /* int cf_include_all */
582 static oconfig_item_t *cf_read_file (const char *file, int depth)
584 oconfig_item_t *root;
586 assert (depth < CF_MAX_DEPTH);
588 root = oconfig_parse_file (file);
591 ERROR ("configfile: Cannot read file `%s'.", file);
595 cf_include_all (root, depth);
598 } /* oconfig_item_t *cf_read_file */
600 static int cf_compare_string (const void *p1, const void *p2)
602 return strcmp (*(const char **) p1, *(const char **) p2);
605 static oconfig_item_t *cf_read_dir (const char *dir, int depth)
607 oconfig_item_t *root = NULL;
610 char **filenames = NULL;
611 int filenames_num = 0;
615 assert (depth < CF_MAX_DEPTH);
621 ERROR ("configfile: opendir failed: %s",
622 sstrerror (errno, errbuf, sizeof (errbuf)));
626 root = (oconfig_item_t *) malloc (sizeof (oconfig_item_t));
629 ERROR ("configfile: malloc failed.");
632 memset (root, 0, sizeof (oconfig_item_t));
634 while ((de = readdir (dh)) != NULL)
639 if ((de->d_name[0] == '.') || (de->d_name[0] == 0))
642 status = ssnprintf (name, sizeof (name), "%s/%s",
644 if ((status < 0) || ((size_t) status >= sizeof (name)))
646 ERROR ("configfile: Not including `%s/%s' because its"
647 " name is too long.",
649 for (i = 0; i < filenames_num; ++i)
657 tmp = (char **) realloc (filenames,
658 filenames_num * sizeof (*filenames));
660 ERROR ("configfile: realloc failed.");
661 for (i = 0; i < filenames_num - 1; ++i)
669 filenames[filenames_num - 1] = sstrdup (name);
672 qsort ((void *) filenames, filenames_num, sizeof (*filenames),
675 for (i = 0; i < filenames_num; ++i)
677 oconfig_item_t *temp;
678 char *name = filenames[i];
680 temp = cf_read_generic (name, depth);
683 /* An error should already have been reported. */
688 cf_ci_append_children (root, temp);
689 sfree (temp->children);
697 } /* oconfig_item_t *cf_read_dir */
702 * Path is stat'ed and either cf_read_file or cf_read_dir is called
705 * There are two versions of this function: If `wordexp' exists shell wildcards
706 * will be expanded and the function will include all matches found. If
707 * `wordexp' (or, more precisely, it's header file) is not available the
708 * simpler function is used which does not do any such expansion.
711 static oconfig_item_t *cf_read_generic (const char *path, int depth)
713 oconfig_item_t *root = NULL;
715 const char *path_ptr;
719 if (depth >= CF_MAX_DEPTH)
721 ERROR ("configfile: Not including `%s' because the maximum "
722 "nesting depth has been reached.", path);
726 status = wordexp (path, &we, WRDE_NOCMD);
729 ERROR ("configfile: wordexp (%s) failed.", path);
733 root = (oconfig_item_t *) malloc (sizeof (oconfig_item_t));
736 ERROR ("configfile: malloc failed.");
739 memset (root, '\0', sizeof (oconfig_item_t));
741 /* wordexp() might return a sorted list already. That's not
742 * documented though, so let's make sure we get what we want. */
743 qsort ((void *) we.we_wordv, we.we_wordc, sizeof (*we.we_wordv),
746 for (i = 0; i < we.we_wordc; i++)
748 oconfig_item_t *temp;
751 path_ptr = we.we_wordv[i];
753 status = stat (path_ptr, &statbuf);
757 WARNING ("configfile: stat (%s) failed: %s",
759 sstrerror (errno, errbuf, sizeof (errbuf)));
763 if (S_ISREG (statbuf.st_mode))
764 temp = cf_read_file (path_ptr, depth);
765 else if (S_ISDIR (statbuf.st_mode))
766 temp = cf_read_dir (path_ptr, depth);
769 WARNING ("configfile: %s is neither a file nor a "
779 cf_ci_append_children (root, temp);
780 sfree (temp->children);
786 if (root->children == NULL)
793 } /* oconfig_item_t *cf_read_generic */
794 /* #endif HAVE_WORDEXP_H */
796 #else /* if !HAVE_WORDEXP_H */
797 static oconfig_item_t *cf_read_generic (const char *path, int depth)
802 if (depth >= CF_MAX_DEPTH)
804 ERROR ("configfile: Not including `%s' because the maximum "
805 "nesting depth has been reached.", path);
809 status = stat (path, &statbuf);
813 ERROR ("configfile: stat (%s) failed: %s",
815 sstrerror (errno, errbuf, sizeof (errbuf)));
819 if (S_ISREG (statbuf.st_mode))
820 return (cf_read_file (path, depth));
821 else if (S_ISDIR (statbuf.st_mode))
822 return (cf_read_dir (path, depth));
824 ERROR ("configfile: %s is neither a file nor a directory.", path);
826 } /* oconfig_item_t *cf_read_generic */
827 #endif /* !HAVE_WORDEXP_H */
832 int global_option_set (const char *option, const char *value)
836 DEBUG ("option = %s; value = %s;", option, value);
838 for (i = 0; i < cf_global_options_num; i++)
839 if (strcasecmp (cf_global_options[i].key, option) == 0)
842 if (i >= cf_global_options_num)
845 sfree (cf_global_options[i].value);
848 cf_global_options[i].value = strdup (value);
850 cf_global_options[i].value = NULL;
855 const char *global_option_get (const char *option)
859 for (i = 0; i < cf_global_options_num; i++)
860 if (strcasecmp (cf_global_options[i].key, option) == 0)
863 if (i >= cf_global_options_num)
866 return ((cf_global_options[i].value != NULL)
867 ? cf_global_options[i].value
868 : cf_global_options[i].def);
869 } /* char *global_option_get */
871 cdtime_t cf_get_default_interval (void)
873 char const *str = global_option_get ("Interval");
874 double interval_double = COLLECTD_DEFAULT_INTERVAL;
879 double tmp = strtod (str, &endptr);
881 if ((endptr == NULL) || (endptr == str) || (*endptr != 0))
882 ERROR ("cf_get_default_interval: Unable to parse string \"%s\" "
885 ERROR ("cf_get_default_interval: Interval must be a positive number. "
886 "The current number is %g.", tmp);
888 interval_double = tmp;
891 return (DOUBLE_TO_CDTIME_T (interval_double));
892 } /* }}} cdtime_t cf_get_default_interval */
894 void cf_unregister (const char *type)
896 cf_callback_t *this, *prev;
898 for (prev = NULL, this = first_callback;
900 prev = this, this = this->next)
901 if (strcasecmp (this->type, type) == 0)
904 first_callback = this->next;
906 prev->next = this->next;
911 } /* void cf_unregister */
913 void cf_unregister_complex (const char *type)
915 cf_complex_callback_t *this, *prev;
917 for (prev = NULL, this = complex_callback_head;
919 prev = this, this = this->next)
920 if (strcasecmp (this->type, type) == 0)
923 complex_callback_head = this->next;
925 prev->next = this->next;
931 } /* void cf_unregister */
933 void cf_register (const char *type,
934 int (*callback) (const char *, const char *),
935 const char **keys, int keys_num)
937 cf_callback_t *cf_cb;
939 /* Remove this module from the list, if it already exists */
940 cf_unregister (type);
942 /* This pointer will be free'd in `cf_unregister' */
943 if ((cf_cb = (cf_callback_t *) malloc (sizeof (cf_callback_t))) == NULL)
947 cf_cb->callback = callback;
949 cf_cb->keys_num = keys_num;
950 cf_cb->ctx = plugin_get_ctx ();
952 cf_cb->next = first_callback;
953 first_callback = cf_cb;
954 } /* void cf_register */
956 int cf_register_complex (const char *type, int (*callback) (oconfig_item_t *))
958 cf_complex_callback_t *new;
960 new = (cf_complex_callback_t *) malloc (sizeof (cf_complex_callback_t));
964 new->type = strdup (type);
965 if (new->type == NULL)
971 new->callback = callback;
974 new->ctx = plugin_get_ctx ();
976 if (complex_callback_head == NULL)
978 complex_callback_head = new;
982 cf_complex_callback_t *last = complex_callback_head;
983 while (last->next != NULL)
989 } /* int cf_register_complex */
991 int cf_read (char *filename)
993 oconfig_item_t *conf;
996 conf = cf_read_generic (filename, 0 /* depth */);
999 ERROR ("Unable to read config file %s.", filename);
1003 for (i = 0; i < conf->children_num; i++)
1005 if (conf->children[i].children == NULL)
1006 dispatch_value (conf->children + i);
1008 dispatch_block (conf->children + i);
1011 oconfig_free (conf);
1013 /* Read the default types.db if no `TypesDB' option was given. */
1014 if (cf_default_typesdb)
1015 read_types_list (PKGDATADIR"/types.db");
1020 /* Assures the config option is a string, duplicates it and returns the copy in
1021 * "ret_string". If necessary "*ret_string" is freed first. Returns zero upon
1023 int cf_util_get_string (const oconfig_item_t *ci, char **ret_string) /* {{{ */
1027 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1029 ERROR ("cf_util_get_string: The %s option requires "
1030 "exactly one string argument.", ci->key);
1034 string = strdup (ci->values[0].value.string);
1038 if (*ret_string != NULL)
1039 sfree (*ret_string);
1040 *ret_string = string;
1043 } /* }}} int cf_util_get_string */
1045 /* Assures the config option is a string and copies it to the provided buffer.
1046 * Assures null-termination. */
1047 int cf_util_get_string_buffer (const oconfig_item_t *ci, char *buffer, /* {{{ */
1050 if ((ci == NULL) || (buffer == NULL) || (buffer_size < 1))
1053 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1055 ERROR ("cf_util_get_string_buffer: The %s option requires "
1056 "exactly one string argument.", ci->key);
1060 strncpy (buffer, ci->values[0].value.string, buffer_size);
1061 buffer[buffer_size - 1] = 0;
1064 } /* }}} int cf_util_get_string_buffer */
1066 /* Assures the config option is a number and returns it as an int. */
1067 int cf_util_get_int (const oconfig_item_t *ci, int *ret_value) /* {{{ */
1069 if ((ci == NULL) || (ret_value == NULL))
1072 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
1074 ERROR ("cf_util_get_int: The %s option requires "
1075 "exactly one numeric argument.", ci->key);
1079 *ret_value = (int) ci->values[0].value.number;
1082 } /* }}} int cf_util_get_int */
1084 int cf_util_get_double (const oconfig_item_t *ci, double *ret_value) /* {{{ */
1086 if ((ci == NULL) || (ret_value == NULL))
1089 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
1091 ERROR ("cf_util_get_double: The %s option requires "
1092 "exactly one numeric argument.", ci->key);
1096 *ret_value = ci->values[0].value.number;
1099 } /* }}} int cf_util_get_double */
1101 int cf_util_get_boolean (const oconfig_item_t *ci, _Bool *ret_bool) /* {{{ */
1103 if ((ci == NULL) || (ret_bool == NULL))
1106 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
1108 ERROR ("cf_util_get_boolean: The %s option requires "
1109 "exactly one boolean argument.", ci->key);
1113 *ret_bool = ci->values[0].value.boolean ? 1 : 0;
1116 } /* }}} int cf_util_get_boolean */
1118 int cf_util_get_flag (const oconfig_item_t *ci, /* {{{ */
1119 unsigned int *ret_value, unsigned int flag)
1124 if (ret_value == NULL)
1128 status = cf_util_get_boolean (ci, &b);
1138 *ret_value &= ~flag;
1142 } /* }}} int cf_util_get_flag */
1144 /* Assures that the config option is a string or a number if the correct range
1145 * of 1-65535. The string is then converted to a port number using
1146 * `service_name_to_port_number' and returned.
1147 * Returns the port number in the range [1-65535] or less than zero upon
1149 int cf_util_get_port_number (const oconfig_item_t *ci) /* {{{ */
1153 if ((ci->values_num != 1)
1154 || ((ci->values[0].type != OCONFIG_TYPE_STRING)
1155 && (ci->values[0].type != OCONFIG_TYPE_NUMBER)))
1157 ERROR ("cf_util_get_port_number: The \"%s\" option requires "
1158 "exactly one string argument.", ci->key);
1162 if (ci->values[0].type == OCONFIG_TYPE_STRING)
1163 return (service_name_to_port_number (ci->values[0].value.string));
1165 assert (ci->values[0].type == OCONFIG_TYPE_NUMBER);
1166 tmp = (int) (ci->values[0].value.number + 0.5);
1167 if ((tmp < 1) || (tmp > 65535))
1169 ERROR ("cf_util_get_port_number: The \"%s\" option requires "
1170 "a service name or a port number. The number "
1171 "you specified, %i, is not in the valid "
1172 "range of 1-65535.",
1178 } /* }}} int cf_util_get_port_number */
1180 int cf_util_get_service (const oconfig_item_t *ci, char **ret_string) /* {{{ */
1186 if (ci->values_num != 1)
1188 ERROR ("cf_util_get_service: The %s option requires exactly "
1189 "one argument.", ci->key);
1193 if (ci->values[0].type == OCONFIG_TYPE_STRING)
1194 return (cf_util_get_string (ci, ret_string));
1195 if (ci->values[0].type != OCONFIG_TYPE_NUMBER)
1197 ERROR ("cf_util_get_service: The %s option requires "
1198 "exactly one string or numeric argument.",
1203 status = cf_util_get_int (ci, &port);
1206 else if ((port < 1) || (port > 65535))
1208 ERROR ("cf_util_get_service: The port number given "
1209 "for the %s option is out of "
1210 "range (%i).", ci->key, port);
1214 service = malloc (6);
1215 if (service == NULL)
1217 ERROR ("cf_util_get_service: Out of memory.");
1220 ssnprintf (service, 6, "%i", port);
1222 sfree (*ret_string);
1223 *ret_string = service;
1226 } /* }}} int cf_util_get_service */
1228 int cf_util_get_cdtime (const oconfig_item_t *ci, cdtime_t *ret_value) /* {{{ */
1230 if ((ci == NULL) || (ret_value == NULL))
1233 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
1235 ERROR ("cf_util_get_cdtime: The %s option requires "
1236 "exactly one numeric argument.", ci->key);
1240 if (ci->values[0].value.number < 0.0)
1242 ERROR ("cf_util_get_cdtime: The numeric argument of the %s "
1243 "option must not be negative.", ci->key);
1247 *ret_value = DOUBLE_TO_CDTIME_T (ci->values[0].value.number);
1250 } /* }}} int cf_util_get_cdtime */