1 /**
2 * collectd - src/curl_xml.c
3 * Copyright (C) 2009,2010 Amit Gupta
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; only version 2 of the License is applicable.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 *
18 * Authors:
19 * Amit Gupta <amit.gupta221 at gmail.com>
20 **/
22 #include "collectd.h"
23 #include "common.h"
24 #include "plugin.h"
25 #include "configfile.h"
26 #include "utils_avltree.h"
28 #include <libxml/parser.h>
29 #include <libxml/tree.h>
30 #include <libxml/xpath.h>
32 #include <curl/curl.h>
34 #define CX_DEFAULT_HOST "localhost"
35 #define CX_KEY_MAGIC 0x43484b59UL /* CHKY */
36 #define CX_IS_KEY(key) (key)->magic == CX_KEY_MAGIC
38 /*
39 * Private data structures
40 */
41 struct cx_values_s /* {{{ */
42 {
43 char path[DATA_MAX_NAME_LEN];
44 size_t path_len;
45 };
46 typedef struct cx_values_s cx_values_t;
47 /* }}} */
49 struct cx_xpath_s /* {{{ */
50 {
51 char *path;
52 char *type;
53 cx_values_t *values;
54 int values_len;
55 char *instance_prefix;
56 char *instance;
57 int is_table;
58 unsigned long magic;
59 };
60 typedef struct cx_xpath_s cx_xpath_t;
61 /* }}} */
63 struct cx_s /* {{{ */
64 {
65 char *instance;
66 char *host;
68 char *url;
69 char *user;
70 char *pass;
71 char *credentials;
72 _Bool verify_peer;
73 _Bool verify_host;
74 char *cacert;
76 CURL *curl;
77 char curl_errbuf[CURL_ERROR_SIZE];
78 char *buffer;
79 size_t buffer_size;
80 size_t buffer_fill;
82 c_avl_tree_t *tree; /* tree of xpath blocks */
83 };
84 typedef struct cx_s cx_t; /* }}} */
86 /*
87 * Private functions
88 */
89 static size_t cx_curl_callback (void *buf, /* {{{ */
90 size_t size, size_t nmemb, void *user_data)
91 {
92 size_t len = size * nmemb;
93 cx_t *db;
95 db = user_data;
96 if (db == NULL)
97 {
98 ERROR ("curl_xml plugin: cx_curl_callback: "
99 "user_data pointer is NULL.");
100 return (0);
101 }
103 if (len <= 0)
104 return (len);
106 if ((db->buffer_fill + len) >= db->buffer_size)
107 {
108 char *temp;
110 temp = (char *) realloc (db->buffer,
111 db->buffer_fill + len + 1);
112 if (temp == NULL)
113 {
114 ERROR ("curl_xml plugin: realloc failed.");
115 return (0);
116 }
117 db->buffer = temp;
118 db->buffer_size = db->buffer_fill + len + 1;
119 }
121 memcpy (db->buffer + db->buffer_fill, (char *) buf, len);
122 db->buffer_fill += len;
123 db->buffer[db->buffer_fill] = 0;
125 return (len);
126 } /* }}} size_t cx_curl_callback */
128 static void cx_xpath_free (cx_xpath_t *xpath) /* {{{ */
129 {
130 if (xpath == NULL)
131 return;
133 sfree (xpath->path);
134 sfree (xpath->type);
135 sfree (xpath->instance_prefix);
136 sfree (xpath->instance);
137 sfree (xpath->values);
138 sfree (xpath);
139 } /* }}} void cx_xpath_free */
141 static void cx_tree_free (c_avl_tree_t *tree) /* {{{ */
142 {
143 char *name;
144 void *value;
146 while (c_avl_pick (tree, (void *) &name, (void *) &value) == 0)
147 {
148 cx_xpath_t *key = (cx_xpath_t *)value;
150 if (CX_IS_KEY(key))
151 cx_xpath_free (key);
152 else
153 cx_tree_free ((c_avl_tree_t *)value);
155 sfree (name);
156 }
158 c_avl_destroy (tree);
159 } /* }}} void cx_tree_free */
161 static void cx_free (void *arg) /* {{{ */
162 {
163 cx_t *db;
165 DEBUG ("curl_xml plugin: cx_free (arg = %p);", arg);
167 db = (cx_t *) arg;
169 if (db == NULL)
170 return;
172 if (db->curl != NULL)
173 curl_easy_cleanup (db->curl);
174 db->curl = NULL;
176 if (db->tree != NULL)
177 cx_tree_free (db->tree);
178 db->tree = NULL;
180 sfree (db->buffer);
181 sfree (db->instance);
182 sfree (db->host);
184 sfree (db->url);
185 sfree (db->user);
186 sfree (db->pass);
187 sfree (db->credentials);
188 sfree (db->cacert);
190 sfree (db);
191 } /* }}} void cx_free */
193 static int cx_check_type (cx_xpath_t *xpath) /* {{{ */
194 {
195 const data_set_t *ds;
197 ds = plugin_get_ds (xpath->type);
198 if (!ds)
199 {
200 WARNING ("curl_xml plugin: DataSet `%s' not defined.", xpath->type);
201 return (-1);
202 }
204 if (ds->ds_num != xpath->values_len)
205 {
206 WARNING ("curl_xml plugin: DataSet `%s' requires %i values, but config talks about %i",
207 xpath->type, ds->ds_num, xpath->values_len);
208 return (-1);
209 }
211 return (0);
212 } /* }}} cx_check_type */
214 static xmlXPathObjectPtr cx_evaluate_xpath (xmlXPathContextPtr xpath_ctx, /* {{{ */
215 xmlChar *expr)
216 {
217 xmlXPathObjectPtr xpath_obj;
219 /* XXX: When to free this? */
220 xpath_obj = xmlXPathEvalExpression(BAD_CAST expr, xpath_ctx);
221 if (xpath_obj == NULL)
222 {
223 WARNING ("curl_xml plugin: "
224 "Error unable to evaluate xpath expression \"%s\". Skipping...", expr);
225 return NULL;
226 }
228 return xpath_obj;
229 } /* }}} cx_evaluate_xpath */
231 static int cx_if_not_text_node (xmlNodePtr node) /* {{{ */
232 {
233 if (node->type == XML_TEXT_NODE || node->type == XML_ATTRIBUTE_NODE)
234 return (0);
236 WARNING ("curl_xml plugin: "
237 "Node \"%s\" doesn't seem to be a text node. Skipping...", node->name);
238 return -1;
239 } /* }}} cx_if_not_text_node */
241 static int cx_submit_xpath_values (char *plugin_instance, /* {{{ */
242 xmlXPathContextPtr xpath_ctx,
243 char *base_xpath, cx_xpath_t *xpath)
244 {
245 int i;
246 int j;
247 int total_nodes;
248 int tmp_size;
249 int status=-1;
250 char *node_value;
252 xmlXPathObjectPtr base_node_obj = NULL;
253 xmlXPathObjectPtr instance_node_obj = NULL;
254 xmlNodeSetPtr base_nodes = NULL;
255 xmlNodeSetPtr instance_node = NULL;
256 xmlNodeSetPtr values_node = NULL;
258 value_list_t vl = VALUE_LIST_INIT;
259 const data_set_t *ds;
261 base_node_obj = cx_evaluate_xpath (xpath_ctx, BAD_CAST base_xpath);
262 if (base_node_obj == NULL)
263 return -1; /* error is logged already */
265 base_nodes = base_node_obj->nodesetval;
266 total_nodes = (base_nodes) ? base_nodes->nodeNr : 0;
268 if (total_nodes == 0)
269 {
270 ERROR ("curl_xml plugin: "
271 "xpath expression \"%s\" doesn't match any of the node. Skipping...", base_xpath);
272 xmlXPathFreeObject (base_node_obj);
273 return -1;
274 }
276 /* If base_xpath returned multiple results, then */
277 /* Instance in the xpath block is required */
278 if (total_nodes > 1 && xpath->instance == NULL)
279 {
280 ERROR ("curl_xml plugin: "
281 "Instance is must in xpath block since the base xpath expression \"%s\" "
282 "returned multiple results. Skipping the xpath block...", base_xpath);
283 return -1;
284 }
286 /* set the values for the value_list */
287 ds = plugin_get_ds (xpath->type);
288 vl.values_len = ds->ds_num;
289 sstrncpy (vl.type, xpath->type, sizeof (vl.type));
290 sstrncpy (vl.plugin, "curl_xml", sizeof (vl.plugin));
291 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
292 if (plugin_instance != NULL)
293 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
295 for (i = 0; i < total_nodes; i++)
296 {
297 xpath_ctx->node = base_nodes->nodeTab[i];
299 /* instance has to be an xpath expression */
300 if (xpath->instance != NULL)
301 {
302 assert (instance_node_obj == NULL);
303 instance_node_obj = cx_evaluate_xpath (xpath_ctx, BAD_CAST xpath->instance);
304 if (instance_node_obj == NULL)
305 continue; /* error is logged already */
307 instance_node = instance_node_obj->nodesetval;
308 tmp_size = (instance_node) ? instance_node->nodeNr : 0;
310 if ( (tmp_size == 0) && (total_nodes > 1) )
311 {
312 WARNING ("curl_xml plugin: "
313 "relative xpath expression for 'Instance' \"%s\" doesn't match "
314 "any of the nodes. Skipping the node - %s",
315 xpath->instance, base_nodes->nodeTab[i]->name);
316 xmlXPathFreeObject (instance_node_obj);
317 continue;
318 }
320 if (tmp_size > 1)
321 {
322 WARNING ("curl_xml plugin: "
323 "relative xpath expression for 'Instance' \"%s\" is expected "
324 "to return only one text node. Skipping the node - %s",
325 xpath->instance, base_nodes->nodeTab[i]->name);
326 xmlXPathFreeObject (instance_node_obj);
327 continue;
328 }
330 /* ignoring the element if other than textnode/attribute */
331 if (cx_if_not_text_node(instance_node->nodeTab[0]))
332 {
333 WARNING ("curl_xml plugin: "
334 "relative xpath expression \"%s\" is expected to return only text node "
335 "which is not the case. Skipping the node - %s",
336 xpath->instance, base_nodes->nodeTab[i]->name);
337 xmlXPathFreeObject (instance_node_obj);
338 continue;
339 }
340 } /* if (xpath->instance != NULL) */
342 for (j = 0; j < xpath->values_len; j++)
343 {
344 xmlXPathObjectPtr values_node_obj;
346 values_node_obj = cx_evaluate_xpath (xpath_ctx, BAD_CAST xpath->values[j].path);
347 if (values_node_obj == NULL)
348 continue; /* Error already logged. */
350 values_node = values_node_obj->nodesetval;
351 tmp_size = (values_node) ? values_node->nodeNr : 0;
353 if (tmp_size == 0)
354 {
355 WARNING ("curl_xml plugin: "
356 "relative xpath expression \"%s\" doesn't match any of the nodes. "
357 "Skipping...", xpath->values[j].path);
358 xmlXPathFreeObject (values_node_obj);
359 continue;
360 }
362 if (tmp_size > 1)
363 {
364 WARNING ("curl_xml plugin: "
365 "relative xpath expression \"%s\" is expected to return "
366 "only one node. Skipping...", xpath->values[j].path);
367 xmlXPathFreeObject (values_node_obj);
368 continue;
369 }
371 /* ignoring the element if other than textnode/attribute*/
372 if (cx_if_not_text_node(values_node->nodeTab[0]))
373 {
374 WARNING ("curl_xml plugin: "
375 "relative xpath expression \"%s\" is expected to return "
376 "only text/attribute node which is not the case. Skipping...",
377 xpath->values[j].path);
378 xmlXPathFreeObject (values_node_obj);
379 continue;
380 }
382 vl.values = (value_t *) malloc (sizeof (value_t) * vl.values_len);
383 if (vl.values == NULL)
384 {
385 ERROR ("curl_xml plugin: malloc failed.");
386 xmlXPathFreeObject (base_node_obj);
387 xmlXPathFreeObject (instance_node_obj);
388 xmlXPathFreeObject (values_node_obj);
389 return (-1);
390 }
392 node_value = (char *) xmlNodeGetContent(values_node->nodeTab[0]);
393 switch (ds->ds[j].type)
394 {
395 case DS_TYPE_COUNTER:
396 vl.values[j].counter = atoi(node_value);
397 break;
398 case DS_TYPE_DERIVE:
399 vl.values[j].derive = atoi(node_value);
400 break;
401 case DS_TYPE_ABSOLUTE:
402 vl.values[j].absolute = atoi(node_value);
403 break;
404 case DS_TYPE_GAUGE:
405 vl.values[j].absolute = atoi(node_value);
406 }
408 if (xpath->instance_prefix != NULL)
409 {
410 if (instance_node != NULL)
411 ssnprintf (vl.type_instance, sizeof (vl.type_instance),"%s-%s",
412 xpath->instance_prefix, (char *) xmlNodeGetContent(instance_node->nodeTab[0]));
413 else
414 sstrncpy (vl.type_instance, xpath->instance_prefix,
415 sizeof (vl.type_instance));
416 }
417 else
418 {
419 /* If instance_prefix and instance_node are NULL, then
420 * don't set the type_instance */
421 if (instance_node != NULL)
422 sstrncpy (vl.type_instance, (char *) xmlNodeGetContent(instance_node->nodeTab[0]),
423 sizeof (vl.type_instance));
424 else
425 vl.type_instance[0] = 0;
426 }
428 /* free up object */
429 xmlXPathFreeObject (values_node_obj);
431 /* We have reached here which means that
432 * we have got something to work */
433 status = 0;
434 } /* for (j = 0; j < xpath->values_len; j++) */
436 /* submit the values */
437 if (vl.values)
438 plugin_dispatch_values (&vl);
440 sfree(vl.values);
441 if (instance_node_obj != NULL)
442 {
443 xmlXPathFreeObject (instance_node_obj);
444 instance_node_obj = NULL;
445 }
446 } /* for (i = 0; i < total_nodes; i++) */
448 /* free up the allocated memory */
449 xmlXPathFreeObject (base_node_obj);
451 return status;
452 } /* }}} cx_submit_xpath_values */
454 static int cx_submit_statistics(xmlDocPtr doc, /* {{{ */
455 xmlXPathContextPtr xpath_ctx, cx_t *db)
456 {
457 c_avl_iterator_t *iter;
458 char *key;
459 cx_xpath_t *value;
460 int status=-1;
462 iter = c_avl_get_iterator (db->tree);
463 while (c_avl_iterator_next (iter, (void *) &key, (void *) &value) == 0)
464 {
465 if (cx_check_type(value) == -1)
466 continue;
468 if (cx_submit_xpath_values(db->instance, xpath_ctx, key, value) == 0)
469 status = 0; /* we got atleast one success */
470 } /* while (c_avl_iterator_next) */
472 return status;
473 } /* }}} cx_submit_statistics */
475 static int cx_parse_stats_xml(xmlChar* xml, cx_t *db) /* {{{ */
476 {
477 int status;
478 xmlDocPtr doc;
479 xmlXPathContextPtr xpath_ctx;
481 /* Load the XML */
482 doc = xmlParseDoc(xml);
483 if (doc == NULL)
484 {
485 ERROR ("curl_xml plugin: Failed to parse the xml document - %s", xml);
486 return (-1);
487 }
489 xpath_ctx = xmlXPathNewContext(doc);
490 if(xpath_ctx == NULL)
491 {
492 ERROR ("curl_xml plugin: Failed to create the xml context");
493 xmlFreeDoc(doc);
494 return (-1);
495 }
497 status = cx_submit_statistics (doc, xpath_ctx, db);
498 /* Cleanup */
499 xmlXPathFreeContext(xpath_ctx);
500 xmlFreeDoc(doc);
501 return status;
502 } /* }}} cx_parse_stats_xml */
504 static int cx_curl_perform (cx_t *db, CURL *curl) /* {{{ */
505 {
506 int status;
507 long rc;
508 char *ptr;
509 char *url;
511 db->buffer_fill = 0;
512 status = curl_easy_perform (curl);
514 curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &url);
515 curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &rc);
517 if (rc != 200)
518 {
519 ERROR ("curl_xml plugin: curl_easy_perform failed with response code %ld (%s)",
520 rc, url);
521 return (-1);
522 }
524 if (status != 0)
525 {
526 ERROR ("curl_xml plugin: curl_easy_perform failed with status %i: %s (%s)",
527 status, db->curl_errbuf, url);
528 return (-1);
529 }
531 ptr = db->buffer;
533 status = cx_parse_stats_xml(BAD_CAST ptr, db);
534 db->buffer_fill = 0;
536 return status;
537 } /* }}} int cx_curl_perform */
539 static int cx_read (user_data_t *ud) /* {{{ */
540 {
541 cx_t *db;
543 if ((ud == NULL) || (ud->data == NULL))
544 {
545 ERROR ("curl_xml plugin: cx_read: Invalid user data.");
546 return (-1);
547 }
549 db = (cx_t *) ud->data;
551 return cx_curl_perform (db, db->curl);
552 } /* }}} int cx_read */
554 /* Configuration handling functions {{{ */
556 static int cx_config_add_values (const char *name, cx_xpath_t *xpath, /* {{{ */
557 oconfig_item_t *ci)
558 {
559 int i;
561 if (ci->values_num < 1)
562 {
563 WARNING ("curl_xml plugin: `Values' needs at least one argument.");
564 return (-1);
565 }
567 for (i = 0; i < ci->values_num; i++)
568 if (ci->values[i].type != OCONFIG_TYPE_STRING)
569 {
570 WARNING ("curl_xml plugin: `Values' needs only string argument.");
571 return (-1);
572 }
574 sfree (xpath->values);
576 xpath->values_len = 0;
577 xpath->values = (cx_values_t *) malloc (sizeof (cx_values_t) * ci->values_num);
578 if (xpath->values == NULL)
579 return (-1);
580 xpath->values_len = ci->values_num;
582 /* populate cx_values_t structure */
583 for (i = 0; i < ci->values_num; i++)
584 {
585 xpath->values[i].path_len = sizeof (ci->values[i].value.string);
586 sstrncpy (xpath->values[i].path, ci->values[i].value.string, sizeof (xpath->values[i].path));
587 }
589 return (0);
590 } /* }}} cx_config_add_values */
592 static c_avl_tree_t *cx_avl_create(void) /* {{{ */
593 {
594 return c_avl_create ((int (*) (const void *, const void *)) strcmp);
595 } /* }}} cx_avl_create */
597 static int cx_config_add_xpath (cx_t *db, /* {{{ */
598 oconfig_item_t *ci)
599 {
600 cx_xpath_t *xpath;
601 int status;
602 int i;
604 if ((ci->values_num != 1)
605 || (ci->values[0].type != OCONFIG_TYPE_STRING))
606 {
607 WARNING ("curl_xml plugin: The `xpath' block "
608 "needs exactly one string argument.");
609 return (-1);
610 }
612 xpath = (cx_xpath_t *) malloc (sizeof (*xpath));
613 if (xpath == NULL)
614 {
615 ERROR ("curl_xml plugin: malloc failed.");
616 return (-1);
617 }
618 memset (xpath, 0, sizeof (*xpath));
619 xpath->magic = CX_KEY_MAGIC;
621 if (strcasecmp ("xpath", ci->key) == 0)
622 {
623 status = cf_util_get_string (ci, &xpath->path);
624 if (status != 0)
625 {
626 sfree (xpath);
627 return (status);
628 }
629 }
630 else
631 {
632 ERROR ("curl_xml plugin: cx_config: "
633 "Invalid key: %s", ci->key);
634 return (-1);
635 }
637 status = 0;
638 for (i = 0; i < ci->children_num; i++)
639 {
640 oconfig_item_t *child = ci->children + i;
642 if (strcasecmp ("Type", child->key) == 0)
643 status = cf_util_get_string (child, &xpath->type);
644 else if (strcasecmp ("InstancePrefix", child->key) == 0)
645 status = cf_util_get_string (child, &xpath->instance_prefix);
646 else if (strcasecmp ("Instance", child->key) == 0)
647 status = cf_util_get_string (child, &xpath->instance);
648 else if (strcasecmp ("Values", child->key) == 0)
649 status = cx_config_add_values ("Values", xpath, child);
650 else
651 {
652 WARNING ("curl_xml plugin: Option `%s' not allowed here.", child->key);
653 status = -1;
654 }
656 if (status != 0)
657 break;
658 } /* for (i = 0; i < ci->children_num; i++) */
660 while (status == 0)
661 {
662 if (xpath->type == NULL)
663 {
664 WARNING ("curl_xml plugin: `Type' missing in `xpath' block.");
665 status = -1;
666 }
668 break;
669 } /* while (status == 0) */
671 if (status == 0)
672 {
673 char *name;
674 c_avl_tree_t *tree;
676 if (db->tree == NULL)
677 db->tree = cx_avl_create();
679 tree = db->tree;
680 name = xpath->path;
682 if (*name)
683 c_avl_insert (tree, strdup(name), xpath);
684 else
685 {
686 ERROR ("curl_xml plugin: invalid key: %s", xpath->path);
687 status = -1;
688 }
689 }
691 return (status);
692 } /* }}} int cx_config_add_xpath */
694 /* Initialize db->curl */
695 static int cx_init_curl (cx_t *db) /* {{{ */
696 {
697 db->curl = curl_easy_init ();
698 if (db->curl == NULL)
699 {
700 ERROR ("curl_xml plugin: curl_easy_init failed.");
701 return (-1);
702 }
704 curl_easy_setopt (db->curl, CURLOPT_WRITEFUNCTION, cx_curl_callback);
705 curl_easy_setopt (db->curl, CURLOPT_WRITEDATA, db);
706 curl_easy_setopt (db->curl, CURLOPT_USERAGENT,
707 PACKAGE_NAME"/"PACKAGE_VERSION);
708 curl_easy_setopt (db->curl, CURLOPT_ERRORBUFFER, db->curl_errbuf);
709 curl_easy_setopt (db->curl, CURLOPT_URL, db->url);
711 if (db->user != NULL)
712 {
713 size_t credentials_size;
715 credentials_size = strlen (db->user) + 2;
716 if (db->pass != NULL)
717 credentials_size += strlen (db->pass);
719 db->credentials = (char *) malloc (credentials_size);
720 if (db->credentials == NULL)
721 {
722 ERROR ("curl_xml plugin: malloc failed.");
723 return (-1);
724 }
726 ssnprintf (db->credentials, credentials_size, "%s:%s",
727 db->user, (db->pass == NULL) ? "" : db->pass);
728 curl_easy_setopt (db->curl, CURLOPT_USERPWD, db->credentials);
729 }
731 curl_easy_setopt (db->curl, CURLOPT_SSL_VERIFYPEER, db->verify_peer);
732 curl_easy_setopt (db->curl, CURLOPT_SSL_VERIFYHOST,
733 db->verify_host ? 2 : 0);
734 if (db->cacert != NULL)
735 curl_easy_setopt (db->curl, CURLOPT_CAINFO, db->cacert);
737 return (0);
738 } /* }}} int cx_init_curl */
740 static int cx_config_add_url (oconfig_item_t *ci) /* {{{ */
741 {
742 cx_t *db;
743 int status = 0;
744 int i;
746 if ((ci->values_num != 1)
747 || (ci->values[0].type != OCONFIG_TYPE_STRING))
748 {
749 WARNING ("curl_xml plugin: The `URL' block "
750 "needs exactly one string argument.");
751 return (-1);
752 }
754 db = (cx_t *) malloc (sizeof (*db));
755 if (db == NULL)
756 {
757 ERROR ("curl_xml plugin: malloc failed.");
758 return (-1);
759 }
760 memset (db, 0, sizeof (*db));
762 if (strcasecmp ("URL", ci->key) == 0)
763 {
764 status = cf_util_get_string (ci, &db->url);
765 if (status != 0)
766 {
767 sfree (db);
768 return (status);
769 }
770 }
771 else
772 {
773 ERROR ("curl_xml plugin: cx_config: "
774 "Invalid key: %s", ci->key);
775 return (-1);
776 }
778 /* Fill the `cx_t' structure.. */
779 for (i = 0; i < ci->children_num; i++)
780 {
781 oconfig_item_t *child = ci->children + i;
783 if (strcasecmp ("Instance", child->key) == 0)
784 status = cf_util_get_string (child, &db->instance);
785 else if (strcasecmp ("Host", child->key) == 0)
786 status = cf_util_get_string (child, &db->host);
787 else if (strcasecmp ("User", child->key) == 0)
788 status = cf_util_get_string (child, &db->user);
789 else if (strcasecmp ("Password", child->key) == 0)
790 status = cf_util_get_string (child, &db->pass);
791 else if (strcasecmp ("VerifyPeer", child->key) == 0)
792 status = cf_util_get_boolean (child, &db->verify_peer);
793 else if (strcasecmp ("VerifyHost", child->key) == 0)
794 status = cf_util_get_boolean (child, &db->verify_host);
795 else if (strcasecmp ("CACert", child->key) == 0)
796 status = cf_util_get_string (child, &db->cacert);
797 else if (strcasecmp ("xpath", child->key) == 0)
798 status = cx_config_add_xpath (db, child);
799 else
800 {
801 WARNING ("curl_xml plugin: Option `%s' not allowed here.", child->key);
802 status = -1;
803 }
805 if (status != 0)
806 break;
807 }
809 if (status == 0)
810 {
811 if (db->tree == NULL)
812 {
813 WARNING ("curl_xml plugin: No (valid) `Key' block "
814 "within `URL' block `%s'.", db->url);
815 status = -1;
816 }
817 if (status == 0)
818 status = cx_init_curl (db);
819 }
821 /* If all went well, register this database for reading */
822 if (status == 0)
823 {
824 user_data_t ud;
825 char cb_name[DATA_MAX_NAME_LEN];
827 if (db->instance == NULL)
828 db->instance = strdup("default");
830 DEBUG ("curl_xml plugin: Registering new read callback: %s",
831 db->instance);
833 memset (&ud, 0, sizeof (ud));
834 ud.data = (void *) db;
835 ud.free_func = cx_free;
837 ssnprintf (cb_name, sizeof (cb_name), "curl_xml-%s-%s",
838 db->instance, db->url);
840 plugin_register_complex_read (cb_name, cx_read,
841 /* interval = */ NULL, &ud);
842 }
843 else
844 {
845 cx_free (db);
846 return (-1);
847 }
849 return (0);
850 } /* }}} int cx_config_add_url */
852 /* }}} End of configuration handling functions */
854 static int cx_config (oconfig_item_t *ci) /* {{{ */
855 {
856 int success;
857 int errors;
858 int status;
859 int i;
861 success = 0;
862 errors = 0;
864 for (i = 0; i < ci->children_num; i++)
865 {
866 oconfig_item_t *child = ci->children + i;
868 if (strcasecmp ("URL", child->key) == 0)
869 {
870 status = cx_config_add_url (child);
871 if (status == 0)
872 success++;
873 else
874 errors++;
875 }
876 else
877 {
878 WARNING ("curl_xml plugin: Option `%s' not allowed here.", child->key);
879 errors++;
880 }
881 }
883 if ((success == 0) && (errors > 0))
884 {
885 ERROR ("curl_xml plugin: All statements failed.");
886 return (-1);
887 }
889 return (0);
890 } /* }}} int cx_config */
892 void module_register (void)
893 {
894 plugin_register_complex_config ("curl_xml", cx_config);
895 } /* void module_register */
897 /* vim: set sw=2 sts=2 et fdm=marker : */