1 /**
2 * collectd - src/configfile.c
3 * Copyright (C) 2005-2009 Florian octo Forster
4 *
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.
9 *
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.
14 *
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
18 *
19 * Authors:
20 * Florian octo Forster <octo at verplant.org>
21 * Sebastian tokkee Harl <sh at tokkee.org>
22 **/
24 #include "collectd.h"
26 #include "liboconfig/oconfig.h"
28 #include "common.h"
29 #include "plugin.h"
30 #include "configfile.h"
31 #include "types_list.h"
32 #include "utils_threshold.h"
33 #include "filter_chain.h"
35 #if HAVE_WORDEXP_H
36 # include <wordexp.h>
37 #endif /* HAVE_WORDEXP_H */
39 #define ESCAPE_NULL(str) ((str) == NULL ? "(null)" : (str))
41 /*
42 * Private types
43 */
44 typedef struct cf_callback
45 {
46 const char *type;
47 int (*callback) (const char *, const char *);
48 const char **keys;
49 int keys_num;
50 struct cf_callback *next;
51 } cf_callback_t;
53 typedef struct cf_complex_callback_s
54 {
55 char *type;
56 int (*callback) (oconfig_item_t *);
57 struct cf_complex_callback_s *next;
58 } cf_complex_callback_t;
60 typedef struct cf_value_map_s
61 {
62 char *key;
63 int (*func) (const oconfig_item_t *);
64 } cf_value_map_t;
66 typedef struct cf_global_option_s
67 {
68 char *key;
69 char *value;
70 char *def;
71 } cf_global_option_t;
73 /*
74 * Prototypes of callback functions
75 */
76 static int dispatch_value_typesdb (const oconfig_item_t *ci);
77 static int dispatch_value_plugindir (const oconfig_item_t *ci);
78 static int dispatch_value_loadplugin (const oconfig_item_t *ci);
80 /*
81 * Private variables
82 */
83 static cf_callback_t *first_callback = NULL;
84 static cf_complex_callback_t *complex_callback_head = NULL;
86 static cf_value_map_t cf_value_map[] =
87 {
88 {"TypesDB", dispatch_value_typesdb},
89 {"PluginDir", dispatch_value_plugindir},
90 {"LoadPlugin", dispatch_value_loadplugin}
91 };
92 static int cf_value_map_num = STATIC_ARRAY_LEN (cf_value_map);
94 static cf_global_option_t cf_global_options[] =
95 {
96 {"BaseDir", NULL, PKGLOCALSTATEDIR},
97 {"PIDFile", NULL, PIDFILE},
98 {"Hostname", NULL, NULL},
99 {"FQDNLookup", NULL, "false"},
100 {"Interval", NULL, "10"},
101 {"ReadThreads", NULL, "5"},
102 {"PreCacheChain", NULL, "PreCache"},
103 {"PostCacheChain", NULL, "PostCache"}
104 };
105 static int cf_global_options_num = STATIC_ARRAY_LEN (cf_global_options);
107 static int cf_default_typesdb = 1;
109 /*
110 * Functions to handle register/unregister, search, and other plugin related
111 * stuff
112 */
113 static cf_callback_t *cf_search (const char *type)
114 {
115 cf_callback_t *cf_cb;
117 if (type == NULL)
118 return (NULL);
120 for (cf_cb = first_callback; cf_cb != NULL; cf_cb = cf_cb->next)
121 if (strcasecmp (cf_cb->type, type) == 0)
122 break;
124 return (cf_cb);
125 }
127 static int cf_dispatch (const char *type, const char *orig_key,
128 const char *orig_value)
129 {
130 cf_callback_t *cf_cb;
131 char *key;
132 char *value;
133 int ret;
134 int i;
136 DEBUG ("type = %s, key = %s, value = %s",
137 ESCAPE_NULL(type),
138 ESCAPE_NULL(orig_key),
139 ESCAPE_NULL(orig_value));
141 if ((cf_cb = cf_search (type)) == NULL)
142 {
143 WARNING ("Found a configuration for the `%s' plugin, but "
144 "the plugin isn't loaded or didn't register "
145 "a configuration callback.", type);
146 return (-1);
147 }
149 if ((key = strdup (orig_key)) == NULL)
150 return (1);
151 if ((value = strdup (orig_value)) == NULL)
152 {
153 free (key);
154 return (2);
155 }
157 ret = -1;
159 for (i = 0; i < cf_cb->keys_num; i++)
160 {
161 if ((cf_cb->keys[i] != NULL)
162 && (strcasecmp (cf_cb->keys[i], key) == 0))
163 {
164 ret = (*cf_cb->callback) (key, value);
165 break;
166 }
167 }
169 if (i >= cf_cb->keys_num)
170 WARNING ("Plugin `%s' did not register for value `%s'.", type, key);
172 free (key);
173 free (value);
175 DEBUG ("return (%i)", ret);
177 return (ret);
178 } /* int cf_dispatch */
180 static int dispatch_global_option (const oconfig_item_t *ci)
181 {
182 if (ci->values_num != 1)
183 return (-1);
184 if (ci->values[0].type == OCONFIG_TYPE_STRING)
185 return (global_option_set (ci->key, ci->values[0].value.string));
186 else if (ci->values[0].type == OCONFIG_TYPE_NUMBER)
187 {
188 char tmp[128];
189 ssnprintf (tmp, sizeof (tmp), "%lf", ci->values[0].value.number);
190 return (global_option_set (ci->key, tmp));
191 }
192 else if (ci->values[0].type == OCONFIG_TYPE_BOOLEAN)
193 {
194 if (ci->values[0].value.boolean)
195 return (global_option_set (ci->key, "true"));
196 else
197 return (global_option_set (ci->key, "false"));
198 }
200 return (-1);
201 } /* int dispatch_global_option */
203 static int dispatch_value_typesdb (const oconfig_item_t *ci)
204 {
205 int i = 0;
207 assert (strcasecmp (ci->key, "TypesDB") == 0);
209 cf_default_typesdb = 0;
211 if (ci->values_num < 1) {
212 ERROR ("configfile: `TypesDB' needs at least one argument.");
213 return (-1);
214 }
216 for (i = 0; i < ci->values_num; ++i)
217 {
218 if (OCONFIG_TYPE_STRING != ci->values[i].type) {
219 WARNING ("configfile: TypesDB: Skipping %i. argument which "
220 "is not a string.", i + 1);
221 continue;
222 }
224 read_types_list (ci->values[i].value.string);
225 }
226 return (0);
227 } /* int dispatch_value_typesdb */
229 static int dispatch_value_plugindir (const oconfig_item_t *ci)
230 {
231 assert (strcasecmp (ci->key, "PluginDir") == 0);
233 if (ci->values_num != 1)
234 return (-1);
235 if (ci->values[0].type != OCONFIG_TYPE_STRING)
236 return (-1);
238 plugin_set_dir (ci->values[0].value.string);
239 return (0);
240 }
242 static int dispatch_value_loadplugin (const oconfig_item_t *ci)
243 {
244 assert (strcasecmp (ci->key, "LoadPlugin") == 0);
246 if (ci->values_num != 1)
247 return (-1);
248 if (ci->values[0].type != OCONFIG_TYPE_STRING)
249 return (-1);
251 return (plugin_load (ci->values[0].value.string));
252 } /* int dispatch_value_loadplugin */
254 static int dispatch_value_plugin (const char *plugin, oconfig_item_t *ci)
255 {
256 char buffer[4096];
257 char *buffer_ptr;
258 int buffer_free;
259 int i;
261 buffer_ptr = buffer;
262 buffer_free = sizeof (buffer);
264 for (i = 0; i < ci->values_num; i++)
265 {
266 int status = -1;
268 if (ci->values[i].type == OCONFIG_TYPE_STRING)
269 status = ssnprintf (buffer_ptr, buffer_free, " %s",
270 ci->values[i].value.string);
271 else if (ci->values[i].type == OCONFIG_TYPE_NUMBER)
272 status = ssnprintf (buffer_ptr, buffer_free, " %lf",
273 ci->values[i].value.number);
274 else if (ci->values[i].type == OCONFIG_TYPE_BOOLEAN)
275 status = ssnprintf (buffer_ptr, buffer_free, " %s",
276 ci->values[i].value.boolean
277 ? "true" : "false");
279 if ((status < 0) || (status >= buffer_free))
280 return (-1);
281 buffer_free -= status;
282 buffer_ptr += status;
283 }
284 /* skip the initial space */
285 buffer_ptr = buffer + 1;
287 return (cf_dispatch (plugin, ci->key, buffer_ptr));
288 } /* int dispatch_value_plugin */
290 static int dispatch_value (const oconfig_item_t *ci)
291 {
292 int ret = -2;
293 int i;
295 for (i = 0; i < cf_value_map_num; i++)
296 if (strcasecmp (cf_value_map[i].key, ci->key) == 0)
297 {
298 ret = cf_value_map[i].func (ci);
299 break;
300 }
302 for (i = 0; i < cf_global_options_num; i++)
303 if (strcasecmp (cf_global_options[i].key, ci->key) == 0)
304 {
305 ret = dispatch_global_option (ci);
306 break;
307 }
309 return (ret);
310 } /* int dispatch_value */
312 static int dispatch_block_plugin (oconfig_item_t *ci)
313 {
314 int i;
315 char *name;
317 cf_complex_callback_t *cb;
319 if (strcasecmp (ci->key, "Plugin") != 0)
320 return (-1);
321 if (ci->values_num < 1)
322 return (-1);
323 if (ci->values[0].type != OCONFIG_TYPE_STRING)
324 return (-1);
326 name = ci->values[0].value.string;
328 /* Check for a complex callback first */
329 for (cb = complex_callback_head; cb != NULL; cb = cb->next)
330 if (strcasecmp (name, cb->type) == 0)
331 return (cb->callback (ci));
333 /* Hm, no complex plugin found. Dispatch the values one by one */
334 for (i = 0; i < ci->children_num; i++)
335 {
336 if (ci->children[i].children == NULL)
337 dispatch_value_plugin (name, ci->children + i);
338 else
339 {DEBUG ("No nested config blocks allowed for this plugin.");}
340 }
342 return (0);
343 }
346 static int dispatch_block (oconfig_item_t *ci)
347 {
348 if (strcasecmp (ci->key, "Plugin") == 0)
349 return (dispatch_block_plugin (ci));
350 else if (strcasecmp (ci->key, "Threshold") == 0)
351 return (ut_config (ci));
352 else if (strcasecmp (ci->key, "Chain") == 0)
353 return (fc_configure (ci));
355 return (0);
356 }
358 static int cf_ci_replace_child (oconfig_item_t *dst, oconfig_item_t *src,
359 int offset)
360 {
361 oconfig_item_t *temp;
362 int i;
364 assert (offset >= 0);
365 assert (dst->children_num > offset);
367 /* Free the memory used by the replaced child. Usually that's the
368 * `Include "blah"' statement. */
369 temp = dst->children + offset;
370 for (i = 0; i < temp->values_num; i++)
371 {
372 if (temp->values[i].type == OCONFIG_TYPE_STRING)
373 {
374 sfree (temp->values[i].value.string);
375 }
376 }
377 sfree (temp->values);
378 temp = NULL;
380 /* If (src->children_num == 0) the array size is decreased. If offset
381 * is _not_ the last element, (offset < (src->children_num - 1)), then
382 * we need to move the trailing elements before resizing the array. */
383 if ((src->children_num == 0) && (offset < (src->children_num - 1)))
384 {
385 int nmemb = src->children_num - (offset + 1);
386 memmove (src->children + offset, src->children + offset + 1,
387 sizeof (oconfig_item_t) * nmemb);
388 }
390 /* Resize the memory containing the children to be big enough to hold
391 * all children. */
392 temp = (oconfig_item_t *) realloc (dst->children,
393 sizeof (oconfig_item_t)
394 * (dst->children_num + src->children_num - 1));
395 if (temp == NULL)
396 {
397 ERROR ("configfile: realloc failed.");
398 return (-1);
399 }
400 dst->children = temp;
402 /* If there are children behind the include statement, and they have
403 * not yet been moved because (src->children_num == 0), then move them
404 * to the end of the list, so that the new children have room before
405 * them. */
406 if ((src->children_num > 0)
407 && ((dst->children_num - (offset + 1)) > 0))
408 {
409 int nmemb = dst->children_num - (offset + 1);
410 int old_offset = offset + 1;
411 int new_offset = offset + src->children_num;
413 memmove (dst->children + new_offset,
414 dst->children + old_offset,
415 sizeof (oconfig_item_t) * nmemb);
416 }
418 /* Last but not least: If there are new childrem, copy them to the
419 * memory reserved for them. */
420 if (src->children_num > 0)
421 {
422 memcpy (dst->children + offset,
423 src->children,
424 sizeof (oconfig_item_t) * src->children_num);
425 }
427 /* Update the number of children. */
428 dst->children_num += (src->children_num - 1);
430 return (0);
431 } /* int cf_ci_replace_child */
433 static int cf_ci_append_children (oconfig_item_t *dst, oconfig_item_t *src)
434 {
435 oconfig_item_t *temp;
437 if ((src == NULL) || (src->children_num == 0))
438 return (0);
440 temp = (oconfig_item_t *) realloc (dst->children,
441 sizeof (oconfig_item_t)
442 * (dst->children_num + src->children_num));
443 if (temp == NULL)
444 {
445 ERROR ("configfile: realloc failed.");
446 return (-1);
447 }
448 dst->children = temp;
450 memcpy (dst->children + dst->children_num,
451 src->children,
452 sizeof (oconfig_item_t)
453 * src->children_num);
454 dst->children_num += src->children_num;
456 return (0);
457 } /* int cf_ci_append_children */
459 #define CF_MAX_DEPTH 8
460 static oconfig_item_t *cf_read_generic (const char *path, int depth);
462 static int cf_include_all (oconfig_item_t *root, int depth)
463 {
464 int i;
466 for (i = 0; i < root->children_num; i++)
467 {
468 oconfig_item_t *new;
469 oconfig_item_t *old;
471 /* Ignore all blocks, including `Include' blocks. */
472 if (root->children[i].children_num != 0)
473 continue;
475 if (strcasecmp (root->children[i].key, "Include") != 0)
476 continue;
478 old = root->children + i;
480 if ((old->values_num != 1)
481 || (old->values[0].type != OCONFIG_TYPE_STRING))
482 {
483 ERROR ("configfile: `Include' needs exactly one string argument.");
484 continue;
485 }
487 new = cf_read_generic (old->values[0].value.string, depth + 1);
488 if (new == NULL)
489 continue;
491 /* Now replace the i'th child in `root' with `new'. */
492 cf_ci_replace_child (root, new, i);
494 sfree (new->values);
495 sfree (new);
496 } /* for (i = 0; i < root->children_num; i++) */
498 return (0);
499 } /* int cf_include_all */
501 static oconfig_item_t *cf_read_file (const char *file, int depth)
502 {
503 oconfig_item_t *root;
505 assert (depth < CF_MAX_DEPTH);
507 root = oconfig_parse_file (file);
508 if (root == NULL)
509 {
510 ERROR ("configfile: Cannot read file `%s'.", file);
511 return (NULL);
512 }
514 cf_include_all (root, depth);
516 return (root);
517 } /* oconfig_item_t *cf_read_file */
519 static int cf_compare_string (const void *p1, const void *p2)
520 {
521 return strcmp (*(const char **) p1, *(const char **) p2);
522 }
524 static oconfig_item_t *cf_read_dir (const char *dir, int depth)
525 {
526 oconfig_item_t *root = NULL;
527 DIR *dh;
528 struct dirent *de;
529 char **filenames = NULL;
530 int filenames_num = 0;
531 int status;
532 int i;
534 assert (depth < CF_MAX_DEPTH);
536 dh = opendir (dir);
537 if (dh == NULL)
538 {
539 char errbuf[1024];
540 ERROR ("configfile: opendir failed: %s",
541 sstrerror (errno, errbuf, sizeof (errbuf)));
542 return (NULL);
543 }
545 root = (oconfig_item_t *) malloc (sizeof (oconfig_item_t));
546 if (root == NULL)
547 {
548 ERROR ("configfile: malloc failed.");
549 return (NULL);
550 }
551 memset (root, '\0', sizeof (oconfig_item_t));
553 while ((de = readdir (dh)) != NULL)
554 {
555 char name[1024];
556 char **tmp;
558 if ((de->d_name[0] == '.') || (de->d_name[0] == '\0'))
559 continue;
561 status = ssnprintf (name, sizeof (name), "%s/%s",
562 dir, de->d_name);
563 if ((status < 0) || ((size_t) status >= sizeof (name)))
564 {
565 ERROR ("configfile: Not including `%s/%s' because its"
566 " name is too long.",
567 dir, de->d_name);
568 for (i = 0; i < filenames_num; ++i)
569 free (filenames[i]);
570 free (filenames);
571 free (root);
572 return (NULL);
573 }
575 ++filenames_num;
576 tmp = (char **) realloc (filenames,
577 filenames_num * sizeof (*filenames));
578 if (tmp == NULL) {
579 ERROR ("configfile: realloc failed.");
580 for (i = 0; i < filenames_num - 1; ++i)
581 free (filenames[i]);
582 free (filenames);
583 free (root);
584 return (NULL);
585 }
586 filenames = tmp;
588 filenames[filenames_num - 1] = sstrdup (name);
589 }
591 qsort ((void *) filenames, filenames_num, sizeof (*filenames),
592 cf_compare_string);
594 for (i = 0; i < filenames_num; ++i)
595 {
596 oconfig_item_t *temp;
597 char *name = filenames[i];
599 temp = cf_read_generic (name, depth);
600 if (temp == NULL) {
601 int j;
602 for (j = i; j < filenames_num; ++j)
603 free (filenames[j]);
604 free (filenames);
605 oconfig_free (root);
606 return (NULL);
607 }
609 cf_ci_append_children (root, temp);
610 sfree (temp->children);
611 sfree (temp);
613 free (name);
614 }
616 free(filenames);
617 return (root);
618 } /* oconfig_item_t *cf_read_dir */
620 /*
621 * cf_read_generic
622 *
623 * Path is stat'ed and either cf_read_file or cf_read_dir is called
624 * accordingly.
625 *
626 * There are two versions of this function: If `wordexp' exists shell wildcards
627 * will be expanded and the function will include all matches found. If
628 * `wordexp' (or, more precisely, it's header file) is not available the
629 * simpler function is used which does not do any such expansion.
630 */
631 #if HAVE_WORDEXP_H
632 static oconfig_item_t *cf_read_generic (const char *path, int depth)
633 {
634 oconfig_item_t *root = NULL;
635 int status;
636 const char *path_ptr;
637 wordexp_t we;
638 size_t i;
640 if (depth >= CF_MAX_DEPTH)
641 {
642 ERROR ("configfile: Not including `%s' because the maximum "
643 "nesting depth has been reached.", path);
644 return (NULL);
645 }
647 status = wordexp (path, &we, WRDE_NOCMD);
648 if (status != 0)
649 {
650 ERROR ("configfile: wordexp (%s) failed.", path);
651 return (NULL);
652 }
654 root = (oconfig_item_t *) malloc (sizeof (oconfig_item_t));
655 if (root == NULL)
656 {
657 ERROR ("configfile: malloc failed.");
658 return (NULL);
659 }
660 memset (root, '\0', sizeof (oconfig_item_t));
662 /* wordexp() might return a sorted list already. That's not
663 * documented though, so let's make sure we get what we want. */
664 qsort ((void *) we.we_wordv, we.we_wordc, sizeof (*we.we_wordv),
665 cf_compare_string);
667 for (i = 0; i < we.we_wordc; i++)
668 {
669 oconfig_item_t *temp;
670 struct stat statbuf;
672 path_ptr = we.we_wordv[i];
674 status = stat (path_ptr, &statbuf);
675 if (status != 0)
676 {
677 char errbuf[1024];
678 ERROR ("configfile: stat (%s) failed: %s",
679 path_ptr,
680 sstrerror (errno, errbuf, sizeof (errbuf)));
681 oconfig_free (root);
682 return (NULL);
683 }
685 if (S_ISREG (statbuf.st_mode))
686 temp = cf_read_file (path_ptr, depth);
687 else if (S_ISDIR (statbuf.st_mode))
688 temp = cf_read_dir (path_ptr, depth);
689 else
690 {
691 ERROR ("configfile: %s is neither a file nor a "
692 "directory.", path);
693 continue;
694 }
696 if (temp == NULL) {
697 oconfig_free (root);
698 return (NULL);
699 }
701 cf_ci_append_children (root, temp);
702 sfree (temp->children);
703 sfree (temp);
704 }
706 wordfree (&we);
708 return (root);
709 } /* oconfig_item_t *cf_read_generic */
710 /* #endif HAVE_WORDEXP_H */
712 #else /* if !HAVE_WORDEXP_H */
713 static oconfig_item_t *cf_read_generic (const char *path, int depth)
714 {
715 struct stat statbuf;
716 int status;
718 if (depth >= CF_MAX_DEPTH)
719 {
720 ERROR ("configfile: Not including `%s' because the maximum "
721 "nesting depth has been reached.", path);
722 return (NULL);
723 }
725 status = stat (path, &statbuf);
726 if (status != 0)
727 {
728 char errbuf[1024];
729 ERROR ("configfile: stat (%s) failed: %s",
730 path,
731 sstrerror (errno, errbuf, sizeof (errbuf)));
732 return (NULL);
733 }
735 if (S_ISREG (statbuf.st_mode))
736 return (cf_read_file (path, depth));
737 else if (S_ISDIR (statbuf.st_mode))
738 return (cf_read_dir (path, depth));
740 ERROR ("configfile: %s is neither a file nor a directory.", path);
741 return (NULL);
742 } /* oconfig_item_t *cf_read_generic */
743 #endif /* !HAVE_WORDEXP_H */
745 /*
746 * Public functions
747 */
748 int global_option_set (const char *option, const char *value)
749 {
750 int i;
752 DEBUG ("option = %s; value = %s;", option, value);
754 for (i = 0; i < cf_global_options_num; i++)
755 if (strcasecmp (cf_global_options[i].key, option) == 0)
756 break;
758 if (i >= cf_global_options_num)
759 return (-1);
761 sfree (cf_global_options[i].value);
763 if (value != NULL)
764 cf_global_options[i].value = strdup (value);
765 else
766 cf_global_options[i].value = NULL;
768 return (0);
769 }
771 const char *global_option_get (const char *option)
772 {
773 int i;
775 for (i = 0; i < cf_global_options_num; i++)
776 if (strcasecmp (cf_global_options[i].key, option) == 0)
777 break;
779 if (i >= cf_global_options_num)
780 return (NULL);
782 return ((cf_global_options[i].value != NULL)
783 ? cf_global_options[i].value
784 : cf_global_options[i].def);
785 } /* char *global_option_get */
787 void cf_unregister (const char *type)
788 {
789 cf_callback_t *this, *prev;
791 for (prev = NULL, this = first_callback;
792 this != NULL;
793 prev = this, this = this->next)
794 if (strcasecmp (this->type, type) == 0)
795 {
796 if (prev == NULL)
797 first_callback = this->next;
798 else
799 prev->next = this->next;
801 free (this);
802 break;
803 }
804 } /* void cf_unregister */
806 void cf_unregister_complex (const char *type)
807 {
808 cf_complex_callback_t *this, *prev;
810 for (prev = NULL, this = complex_callback_head;
811 this != NULL;
812 prev = this, this = this->next)
813 if (strcasecmp (this->type, type) == 0)
814 {
815 if (prev == NULL)
816 complex_callback_head = this->next;
817 else
818 prev->next = this->next;
820 sfree (this->type);
821 sfree (this);
822 break;
823 }
824 } /* void cf_unregister */
826 void cf_register (const char *type,
827 int (*callback) (const char *, const char *),
828 const char **keys, int keys_num)
829 {
830 cf_callback_t *cf_cb;
832 /* Remove this module from the list, if it already exists */
833 cf_unregister (type);
835 /* This pointer will be free'd in `cf_unregister' */
836 if ((cf_cb = (cf_callback_t *) malloc (sizeof (cf_callback_t))) == NULL)
837 return;
839 cf_cb->type = type;
840 cf_cb->callback = callback;
841 cf_cb->keys = keys;
842 cf_cb->keys_num = keys_num;
844 cf_cb->next = first_callback;
845 first_callback = cf_cb;
846 } /* void cf_register */
848 int cf_register_complex (const char *type, int (*callback) (oconfig_item_t *))
849 {
850 cf_complex_callback_t *new;
852 new = (cf_complex_callback_t *) malloc (sizeof (cf_complex_callback_t));
853 if (new == NULL)
854 return (-1);
856 new->type = strdup (type);
857 if (new->type == NULL)
858 {
859 sfree (new);
860 return (-1);
861 }
863 new->callback = callback;
864 new->next = NULL;
866 if (complex_callback_head == NULL)
867 {
868 complex_callback_head = new;
869 }
870 else
871 {
872 cf_complex_callback_t *last = complex_callback_head;
873 while (last->next != NULL)
874 last = last->next;
875 last->next = new;
876 }
878 return (0);
879 } /* int cf_register_complex */
881 int cf_read (char *filename)
882 {
883 oconfig_item_t *conf;
884 int i;
886 conf = cf_read_generic (filename, 0 /* depth */);
887 if (conf == NULL)
888 {
889 ERROR ("Unable to read config file %s.", filename);
890 return (-1);
891 }
893 for (i = 0; i < conf->children_num; i++)
894 {
895 if (conf->children[i].children == NULL)
896 dispatch_value (conf->children + i);
897 else
898 dispatch_block (conf->children + i);
899 }
901 oconfig_free (conf);
903 /* Read the default types.db if no `TypesDB' option was given. */
904 if (cf_default_typesdb)
905 read_types_list (PKGDATADIR"/types.db");
907 return (0);
908 } /* int cf_read */