1 /**
2 * collectd - src/curl_json.c
3 * Copyright (C) 2009 Doug MacEachern
4 * Copyright (C) 2006-2011 Florian octo Forster
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; only version 2 of the License is applicable.
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 * Doug MacEachern <dougm at hyperic.com>
21 * Florian octo Forster <octo at collectd.org>
22 **/
24 #include "collectd.h"
25 #include "common.h"
26 #include "plugin.h"
27 #include "configfile.h"
28 #include "utils_avltree.h"
29 #include "utils_complain.h"
31 #include <curl/curl.h>
32 #include <yajl/yajl_parse.h>
33 #if HAVE_YAJL_YAJL_VERSION_H
34 # include <yajl/yajl_version.h>
35 #endif
37 #if defined(YAJL_MAJOR) && (YAJL_MAJOR > 1)
38 # define HAVE_YAJL_V2 1
39 #endif
41 #define CJ_DEFAULT_HOST "localhost"
42 #define CJ_KEY_MAGIC 0x43484b59UL /* CHKY */
43 #define CJ_IS_KEY(key) (key)->magic == CJ_KEY_MAGIC
44 #define CJ_ANY "*"
45 #define COUCH_MIN(x,y) ((x) < (y) ? (x) : (y))
47 struct cj_key_s;
48 typedef struct cj_key_s cj_key_t;
49 struct cj_key_s /* {{{ */
50 {
51 char *path;
52 char *type;
53 char *instance;
54 unsigned long magic;
55 };
56 /* }}} */
58 struct cj_s /* {{{ */
59 {
60 char *instance;
61 char *host;
63 char *url;
64 char *user;
65 char *pass;
66 char *credentials;
67 int verify_peer;
68 int verify_host;
69 char *cacert;
71 CURL *curl;
72 char curl_errbuf[CURL_ERROR_SIZE];
74 yajl_handle yajl;
75 c_avl_tree_t *tree;
76 cj_key_t *key;
77 int depth;
78 struct {
79 union {
80 c_avl_tree_t *tree;
81 cj_key_t *key;
82 };
83 char name[DATA_MAX_NAME_LEN];
84 } state[YAJL_MAX_DEPTH];
85 };
86 typedef struct cj_s cj_t; /* }}} */
88 #if HAVE_YAJL_V2
89 typedef size_t yajl_len_t;
90 #else
91 typedef unsigned int yajl_len_t;
92 #endif
94 static int cj_read (user_data_t *ud);
95 static int cj_curl_perform (cj_t *db, CURL *curl);
96 static void cj_submit (cj_t *db, cj_key_t *key, value_t *value);
98 static size_t cj_curl_callback (void *buf, /* {{{ */
99 size_t size, size_t nmemb, void *user_data)
100 {
101 cj_t *db;
102 size_t len;
103 yajl_status status;
105 len = size * nmemb;
107 if (len <= 0)
108 return (len);
110 db = user_data;
111 if (db == NULL)
112 return (0);
114 status = yajl_parse(db->yajl, (unsigned char *)buf, len);
115 if (status == yajl_status_ok)
116 return (len);
117 #if !HAVE_YAJL_V2
118 else if (status == yajl_status_insufficient_data)
119 return (len);
120 #endif
122 if (status != yajl_status_ok)
123 {
124 unsigned char *msg =
125 yajl_get_error(db->yajl, 1, (unsigned char *)buf, len);
126 ERROR ("curl_json plugin: yajl_parse failed: %s", msg);
127 yajl_free_error(db->yajl, msg);
128 return (0); /* abort write callback */
129 }
131 return (len);
132 } /* }}} size_t cj_curl_callback */
134 static int cj_get_type (cj_key_t *key)
135 {
136 const data_set_t *ds;
138 ds = plugin_get_ds (key->type);
139 if (ds == NULL)
140 {
141 static char type[DATA_MAX_NAME_LEN] = "!!!invalid!!!";
143 assert (key->type != NULL);
144 if (strcmp (type, key->type) != 0)
145 {
146 ERROR ("curl_json plugin: Unable to look up DS type \"%s\".",
147 key->type);
148 sstrncpy (type, key->type, sizeof (type));
149 }
151 return -1;
152 }
153 else if (ds->ds_num > 1)
154 {
155 static c_complain_t complaint = C_COMPLAIN_INIT_STATIC;
157 c_complain_once (LOG_WARNING, &complaint,
158 "curl_json plugin: The type \"%s\" has more than one data source. "
159 "This is currently not supported. I will return the type of the "
160 "first data source, but this will likely lead to problems later on.",
161 key->type);
162 }
164 return ds->ds[0].type;
165 }
167 /* yajl callbacks */
168 #define CJ_CB_ABORT 0
169 #define CJ_CB_CONTINUE 1
171 /* "number" may not be null terminated, so copy it into a buffer before
172 * parsing. */
173 static int cj_cb_number (void *ctx,
174 const char *number, yajl_len_t number_len)
175 {
176 char buffer[number_len + 1];
178 cj_t *db = (cj_t *)ctx;
179 cj_key_t *key = db->state[db->depth].key;
180 char *endptr;
181 value_t vt;
182 int type;
184 if (key == NULL)
185 return (CJ_CB_CONTINUE);
187 memcpy (buffer, number, number_len);
188 buffer[sizeof (buffer) - 1] = 0;
190 type = cj_get_type (key);
191 if (type < 0)
192 return (CJ_CB_CONTINUE);
194 endptr = NULL;
195 errno = 0;
197 if (type == DS_TYPE_COUNTER)
198 vt.counter = (counter_t) strtoull (buffer, &endptr, /* base = */ 0);
199 else if (type == DS_TYPE_GAUGE)
200 vt.gauge = (gauge_t) strtod (buffer, &endptr);
201 else if (type == DS_TYPE_DERIVE)
202 vt.derive = (derive_t) strtoll (buffer, &endptr, /* base = */ 0);
203 else if (type == DS_TYPE_ABSOLUTE)
204 vt.absolute = (absolute_t) strtoull (buffer, &endptr, /* base = */ 0);
205 else
206 {
207 ERROR ("curl_json plugin: Unknown data source type: \"%s\"", key->type);
208 return (CJ_CB_ABORT);
209 }
211 if ((endptr == &buffer[0]) || (errno != 0))
212 {
213 NOTICE ("curl_json plugin: Overflow while parsing number. "
214 "Ignoring this value.");
215 return (CJ_CB_CONTINUE);
216 }
218 cj_submit (db, key, &vt);
219 return (CJ_CB_CONTINUE);
220 } /* int cj_cb_number */
222 static int cj_cb_map_key (void *ctx, const unsigned char *val,
223 yajl_len_t len)
224 {
225 cj_t *db = (cj_t *)ctx;
226 c_avl_tree_t *tree;
228 tree = db->state[db->depth-1].tree;
230 if (tree != NULL)
231 {
232 cj_key_t *value;
233 char *name;
235 name = db->state[db->depth].name;
236 len = COUCH_MIN(len, sizeof (db->state[db->depth].name)-1);
237 sstrncpy (name, (char *)val, len+1);
239 if (c_avl_get (tree, name, (void *) &value) == 0)
240 db->state[db->depth].key = value;
241 else if (c_avl_get (tree, CJ_ANY, (void *) &value) == 0)
242 db->state[db->depth].key = value;
243 else
244 db->state[db->depth].key = NULL;
245 }
247 return (CJ_CB_CONTINUE);
248 }
250 static int cj_cb_string (void *ctx, const unsigned char *val,
251 yajl_len_t len)
252 {
253 cj_t *db = (cj_t *)ctx;
254 c_avl_tree_t *tree;
255 char *ptr;
257 if (db->depth != 1) /* e.g. _all_dbs */
258 return (CJ_CB_CONTINUE);
260 cj_cb_map_key (ctx, val, len); /* same logic */
262 tree = db->state[db->depth].tree;
264 if ((tree != NULL) && (ptr = rindex (db->url, '/')))
265 {
266 char url[PATH_MAX];
267 CURL *curl;
269 /* url =~ s,[^/]+$,$name, */
270 len = (ptr - db->url) + 1;
271 ptr = url;
272 sstrncpy (ptr, db->url, sizeof (url));
273 sstrncpy (ptr + len, db->state[db->depth].name, sizeof (url) - len);
275 curl = curl_easy_duphandle (db->curl);
276 curl_easy_setopt (curl, CURLOPT_URL, url);
277 cj_curl_perform (db, curl);
278 curl_easy_cleanup (curl);
279 }
280 return (CJ_CB_CONTINUE);
281 }
283 static int cj_cb_start (void *ctx)
284 {
285 cj_t *db = (cj_t *)ctx;
286 if (++db->depth >= YAJL_MAX_DEPTH)
287 {
288 ERROR ("curl_json plugin: %s depth exceeds max, aborting.", db->url);
289 return (CJ_CB_ABORT);
290 }
291 return (CJ_CB_CONTINUE);
292 }
294 static int cj_cb_end (void *ctx)
295 {
296 cj_t *db = (cj_t *)ctx;
297 db->state[db->depth].tree = NULL;
298 --db->depth;
299 return (CJ_CB_CONTINUE);
300 }
302 static int cj_cb_start_map (void *ctx)
303 {
304 return cj_cb_start (ctx);
305 }
307 static int cj_cb_end_map (void *ctx)
308 {
309 return cj_cb_end (ctx);
310 }
312 static int cj_cb_start_array (void * ctx)
313 {
314 return cj_cb_start (ctx);
315 }
317 static int cj_cb_end_array (void * ctx)
318 {
319 return cj_cb_end (ctx);
320 }
322 static yajl_callbacks ycallbacks = {
323 NULL, /* null */
324 NULL, /* boolean */
325 NULL, /* integer */
326 NULL, /* double */
327 cj_cb_number,
328 cj_cb_string,
329 cj_cb_start_map,
330 cj_cb_map_key,
331 cj_cb_end_map,
332 cj_cb_start_array,
333 cj_cb_end_array
334 };
336 /* end yajl callbacks */
338 static void cj_key_free (cj_key_t *key) /* {{{ */
339 {
340 if (key == NULL)
341 return;
343 sfree (key->path);
344 sfree (key->type);
345 sfree (key->instance);
347 sfree (key);
348 } /* }}} void cj_key_free */
350 static void cj_tree_free (c_avl_tree_t *tree) /* {{{ */
351 {
352 char *name;
353 void *value;
355 while (c_avl_pick (tree, (void *) &name, (void *) &value) == 0)
356 {
357 cj_key_t *key = (cj_key_t *)value;
359 if (CJ_IS_KEY(key))
360 cj_key_free (key);
361 else
362 cj_tree_free ((c_avl_tree_t *)value);
364 sfree (name);
365 }
367 c_avl_destroy (tree);
368 } /* }}} void cj_tree_free */
370 static void cj_free (void *arg) /* {{{ */
371 {
372 cj_t *db;
374 DEBUG ("curl_json plugin: cj_free (arg = %p);", arg);
376 db = (cj_t *) arg;
378 if (db == NULL)
379 return;
381 if (db->curl != NULL)
382 curl_easy_cleanup (db->curl);
383 db->curl = NULL;
385 if (db->tree != NULL)
386 cj_tree_free (db->tree);
387 db->tree = NULL;
389 sfree (db->instance);
390 sfree (db->host);
392 sfree (db->url);
393 sfree (db->user);
394 sfree (db->pass);
395 sfree (db->credentials);
396 sfree (db->cacert);
398 sfree (db);
399 } /* }}} void cj_free */
401 /* Configuration handling functions {{{ */
403 static int cj_config_add_string (const char *name, char **dest, /* {{{ */
404 oconfig_item_t *ci)
405 {
406 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
407 {
408 WARNING ("curl_json plugin: `%s' needs exactly one string argument.", name);
409 return (-1);
410 }
412 sfree (*dest);
413 *dest = strdup (ci->values[0].value.string);
414 if (*dest == NULL)
415 return (-1);
417 return (0);
418 } /* }}} int cj_config_add_string */
420 static int cj_config_set_boolean (const char *name, int *dest, /* {{{ */
421 oconfig_item_t *ci)
422 {
423 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
424 {
425 WARNING ("curl_json plugin: `%s' needs exactly one boolean argument.", name);
426 return (-1);
427 }
429 *dest = ci->values[0].value.boolean ? 1 : 0;
431 return (0);
432 } /* }}} int cj_config_set_boolean */
434 static c_avl_tree_t *cj_avl_create(void)
435 {
436 return c_avl_create ((int (*) (const void *, const void *)) strcmp);
437 }
439 static int cj_config_add_key (cj_t *db, /* {{{ */
440 oconfig_item_t *ci)
441 {
442 cj_key_t *key;
443 int status;
444 int i;
446 if ((ci->values_num != 1)
447 || (ci->values[0].type != OCONFIG_TYPE_STRING))
448 {
449 WARNING ("curl_json plugin: The `Key' block "
450 "needs exactly one string argument.");
451 return (-1);
452 }
454 key = (cj_key_t *) malloc (sizeof (*key));
455 if (key == NULL)
456 {
457 ERROR ("curl_json plugin: malloc failed.");
458 return (-1);
459 }
460 memset (key, 0, sizeof (*key));
461 key->magic = CJ_KEY_MAGIC;
463 if (strcasecmp ("Key", ci->key) == 0)
464 {
465 status = cj_config_add_string ("Key", &key->path, ci);
466 if (status != 0)
467 {
468 sfree (key);
469 return (status);
470 }
471 }
472 else
473 {
474 ERROR ("curl_json plugin: cj_config: "
475 "Invalid key: %s", ci->key);
476 return (-1);
477 }
479 status = 0;
480 for (i = 0; i < ci->children_num; i++)
481 {
482 oconfig_item_t *child = ci->children + i;
484 if (strcasecmp ("Type", child->key) == 0)
485 status = cj_config_add_string ("Type", &key->type, child);
486 else if (strcasecmp ("Instance", child->key) == 0)
487 status = cj_config_add_string ("Instance", &key->instance, child);
488 else
489 {
490 WARNING ("curl_json plugin: Option `%s' not allowed here.", child->key);
491 status = -1;
492 }
494 if (status != 0)
495 break;
496 } /* for (i = 0; i < ci->children_num; i++) */
498 while (status == 0)
499 {
500 if (key->type == NULL)
501 {
502 WARNING ("curl_json plugin: `Type' missing in `Key' block.");
503 status = -1;
504 }
506 break;
507 } /* while (status == 0) */
509 /* store path in a tree that will match the json map structure, example:
510 * "httpd/requests/count",
511 * "httpd/requests/current" ->
512 * { "httpd": { "requests": { "count": $key, "current": $key } } }
513 */
514 if (status == 0)
515 {
516 char *ptr;
517 char *name;
518 char ent[PATH_MAX];
519 c_avl_tree_t *tree;
521 if (db->tree == NULL)
522 db->tree = cj_avl_create();
524 tree = db->tree;
525 name = key->path;
526 ptr = key->path;
527 if (*ptr == '/')
528 ++ptr;
530 name = ptr;
531 while (*ptr)
532 {
533 if (*ptr == '/')
534 {
535 c_avl_tree_t *value;
536 int len;
538 len = ptr-name;
539 if (len == 0)
540 break;
541 sstrncpy (ent, name, len+1);
543 if (c_avl_get (tree, ent, (void *) &value) != 0)
544 {
545 value = cj_avl_create ();
546 c_avl_insert (tree, strdup (ent), value);
547 }
549 tree = value;
550 name = ptr+1;
551 }
552 ++ptr;
553 }
554 if (*name)
555 c_avl_insert (tree, strdup(name), key);
556 else
557 {
558 ERROR ("curl_json plugin: invalid key: %s", key->path);
559 status = -1;
560 }
561 }
563 return (status);
564 } /* }}} int cj_config_add_key */
566 static int cj_init_curl (cj_t *db) /* {{{ */
567 {
568 db->curl = curl_easy_init ();
569 if (db->curl == NULL)
570 {
571 ERROR ("curl_json plugin: curl_easy_init failed.");
572 return (-1);
573 }
575 curl_easy_setopt (db->curl, CURLOPT_NOSIGNAL, 1L);
576 curl_easy_setopt (db->curl, CURLOPT_WRITEFUNCTION, cj_curl_callback);
577 curl_easy_setopt (db->curl, CURLOPT_WRITEDATA, db);
578 curl_easy_setopt (db->curl, CURLOPT_USERAGENT,
579 PACKAGE_NAME"/"PACKAGE_VERSION);
580 curl_easy_setopt (db->curl, CURLOPT_ERRORBUFFER, db->curl_errbuf);
581 curl_easy_setopt (db->curl, CURLOPT_URL, db->url);
583 if (db->user != NULL)
584 {
585 size_t credentials_size;
587 credentials_size = strlen (db->user) + 2;
588 if (db->pass != NULL)
589 credentials_size += strlen (db->pass);
591 db->credentials = (char *) malloc (credentials_size);
592 if (db->credentials == NULL)
593 {
594 ERROR ("curl_json plugin: malloc failed.");
595 return (-1);
596 }
598 ssnprintf (db->credentials, credentials_size, "%s:%s",
599 db->user, (db->pass == NULL) ? "" : db->pass);
600 curl_easy_setopt (db->curl, CURLOPT_USERPWD, db->credentials);
601 }
603 curl_easy_setopt (db->curl, CURLOPT_SSL_VERIFYPEER, (long) db->verify_peer);
604 curl_easy_setopt (db->curl, CURLOPT_SSL_VERIFYHOST,
605 db->verify_host ? 2L : 0L);
606 if (db->cacert != NULL)
607 curl_easy_setopt (db->curl, CURLOPT_CAINFO, db->cacert);
609 return (0);
610 } /* }}} int cj_init_curl */
612 static int cj_config_add_url (oconfig_item_t *ci) /* {{{ */
613 {
614 cj_t *db;
615 int status = 0;
616 int i;
618 if ((ci->values_num != 1)
619 || (ci->values[0].type != OCONFIG_TYPE_STRING))
620 {
621 WARNING ("curl_json plugin: The `URL' block "
622 "needs exactly one string argument.");
623 return (-1);
624 }
626 db = (cj_t *) malloc (sizeof (*db));
627 if (db == NULL)
628 {
629 ERROR ("curl_json plugin: malloc failed.");
630 return (-1);
631 }
632 memset (db, 0, sizeof (*db));
634 if (strcasecmp ("URL", ci->key) == 0)
635 {
636 status = cj_config_add_string ("URL", &db->url, ci);
637 if (status != 0)
638 {
639 sfree (db);
640 return (status);
641 }
642 }
643 else
644 {
645 ERROR ("curl_json plugin: cj_config: "
646 "Invalid key: %s", ci->key);
647 return (-1);
648 }
650 /* Fill the `cj_t' structure.. */
651 for (i = 0; i < ci->children_num; i++)
652 {
653 oconfig_item_t *child = ci->children + i;
655 if (strcasecmp ("Instance", child->key) == 0)
656 status = cj_config_add_string ("Instance", &db->instance, child);
657 else if (strcasecmp ("Host", child->key) == 0)
658 status = cj_config_add_string ("Host", &db->host, child);
659 else if (strcasecmp ("User", child->key) == 0)
660 status = cj_config_add_string ("User", &db->user, child);
661 else if (strcasecmp ("Password", child->key) == 0)
662 status = cj_config_add_string ("Password", &db->pass, child);
663 else if (strcasecmp ("VerifyPeer", child->key) == 0)
664 status = cj_config_set_boolean ("VerifyPeer", &db->verify_peer, child);
665 else if (strcasecmp ("VerifyHost", child->key) == 0)
666 status = cj_config_set_boolean ("VerifyHost", &db->verify_host, child);
667 else if (strcasecmp ("CACert", child->key) == 0)
668 status = cj_config_add_string ("CACert", &db->cacert, child);
669 else if (strcasecmp ("Key", child->key) == 0)
670 status = cj_config_add_key (db, child);
671 else
672 {
673 WARNING ("curl_json plugin: Option `%s' not allowed here.", child->key);
674 status = -1;
675 }
677 if (status != 0)
678 break;
679 }
681 if (status == 0)
682 {
683 if (db->tree == NULL)
684 {
685 WARNING ("curl_json plugin: No (valid) `Key' block "
686 "within `URL' block `%s'.", db->url);
687 status = -1;
688 }
689 if (status == 0)
690 status = cj_init_curl (db);
691 }
693 /* If all went well, register this database for reading */
694 if (status == 0)
695 {
696 user_data_t ud;
697 char cb_name[DATA_MAX_NAME_LEN];
699 if (db->instance == NULL)
700 db->instance = strdup("default");
702 DEBUG ("curl_json plugin: Registering new read callback: %s",
703 db->instance);
705 memset (&ud, 0, sizeof (ud));
706 ud.data = (void *) db;
707 ud.free_func = cj_free;
709 ssnprintf (cb_name, sizeof (cb_name), "curl_json-%s-%s",
710 db->instance, db->url);
712 plugin_register_complex_read (/* group = */ NULL, cb_name, cj_read,
713 /* interval = */ NULL, &ud);
714 }
715 else
716 {
717 cj_free (db);
718 return (-1);
719 }
721 return (0);
722 }
723 /* }}} int cj_config_add_database */
725 static int cj_config (oconfig_item_t *ci) /* {{{ */
726 {
727 int success;
728 int errors;
729 int status;
730 int i;
732 success = 0;
733 errors = 0;
735 for (i = 0; i < ci->children_num; i++)
736 {
737 oconfig_item_t *child = ci->children + i;
739 if (strcasecmp ("URL", child->key) == 0)
740 {
741 status = cj_config_add_url (child);
742 if (status == 0)
743 success++;
744 else
745 errors++;
746 }
747 else
748 {
749 WARNING ("curl_json plugin: Option `%s' not allowed here.", child->key);
750 errors++;
751 }
752 }
754 if ((success == 0) && (errors > 0))
755 {
756 ERROR ("curl_json plugin: All statements failed.");
757 return (-1);
758 }
760 return (0);
761 } /* }}} int cj_config */
763 /* }}} End of configuration handling functions */
765 static void cj_submit (cj_t *db, cj_key_t *key, value_t *value) /* {{{ */
766 {
767 value_list_t vl = VALUE_LIST_INIT;
768 char *host;
770 vl.values = value;
771 vl.values_len = 1;
773 if ((db->host == NULL)
774 || (strcmp ("", db->host) == 0)
775 || (strcmp (CJ_DEFAULT_HOST, db->host) == 0))
776 host = hostname_g;
777 else
778 host = db->host;
780 if (key->instance == NULL)
781 {
782 if ((db->depth == 0) || (strcmp ("", db->state[db->depth-1].name) == 0))
783 sstrncpy (vl.type_instance, db->state[db->depth].name, sizeof (vl.type_instance));
784 else
785 ssnprintf (vl.type_instance, sizeof (vl.type_instance), "%s-%s",
786 db->state[db->depth-1].name, db->state[db->depth].name);
787 }
788 else
789 sstrncpy (vl.type_instance, key->instance, sizeof (vl.type_instance));
791 sstrncpy (vl.host, host, sizeof (vl.host));
792 sstrncpy (vl.plugin, "curl_json", sizeof (vl.plugin));
793 sstrncpy (vl.plugin_instance, db->instance, sizeof (vl.plugin_instance));
794 sstrncpy (vl.type, key->type, sizeof (vl.type));
796 plugin_dispatch_values (&vl);
797 } /* }}} int cj_submit */
799 static int cj_curl_perform (cj_t *db, CURL *curl) /* {{{ */
800 {
801 int status;
802 long rc;
803 char *url;
804 yajl_handle yprev = db->yajl;
806 db->yajl = yajl_alloc (&ycallbacks,
807 #if HAVE_YAJL_V2
808 /* alloc funcs = */ NULL,
809 #else
810 /* alloc funcs = */ NULL, NULL,
811 #endif
812 /* context = */ (void *)db);
813 if (db->yajl == NULL)
814 {
815 ERROR ("curl_json plugin: yajl_alloc failed.");
816 db->yajl = yprev;
817 return (-1);
818 }
820 status = curl_easy_perform (curl);
822 curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &url);
823 curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &rc);
825 /* The response code is zero if a non-HTTP transport was used. */
826 if ((rc != 0) && (rc != 200))
827 {
828 ERROR ("curl_json plugin: curl_easy_perform failed with response code %ld (%s)",
829 rc, url);
830 yajl_free (db->yajl);
831 db->yajl = yprev;
832 return (-1);
833 }
835 if (status != 0)
836 {
837 ERROR ("curl_json plugin: curl_easy_perform failed with status %i: %s (%s)",
838 status, db->curl_errbuf, url);
839 yajl_free (db->yajl);
840 db->yajl = yprev;
841 return (-1);
842 }
844 #if HAVE_YAJL_V2
845 status = yajl_complete_parse(db->yajl);
846 #else
847 status = yajl_parse_complete(db->yajl);
848 #endif
849 if (status != yajl_status_ok)
850 {
851 ERROR ("curl_json plugin: %s failed with status %i.",
852 #if HAVE_YAJL_V2
853 "yajl_complete_parse",
854 #else
855 "yajl_parse_complete",
856 #endif
857 status);
858 }
860 yajl_free (db->yajl);
861 db->yajl = yprev;
863 return (0);
864 } /* }}} int cj_curl_perform */
866 static int cj_read (user_data_t *ud) /* {{{ */
867 {
868 cj_t *db;
870 if ((ud == NULL) || (ud->data == NULL))
871 {
872 ERROR ("curl_json plugin: cj_read: Invalid user data.");
873 return (-1);
874 }
876 db = (cj_t *) ud->data;
878 db->depth = 0;
879 memset (&db->state, 0, sizeof(db->state));
880 db->state[db->depth].tree = db->tree;
881 db->key = NULL;
883 return cj_curl_perform (db, db->curl);
884 } /* }}} int cj_read */
886 void module_register (void)
887 {
888 plugin_register_complex_config ("curl_json", cj_config);
889 } /* void module_register */
891 /* vim: set sw=2 sts=2 et fdm=marker : */