98b737232e7c6ea5004e2089079771b41432d174
1 /**
2 * libcollectdclient - src/libcollectdclient/client.c
3 * Copyright (C) 2008 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; 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 * Florian octo Forster <octo at verplant.org>
20 **/
22 /* Set to C99 and POSIX code */
23 #ifndef _ISOC99_SOURCE
24 # define _ISOC99_SOURCE
25 #endif
26 #ifndef _POSIX_SOURCE
27 # define _POSIX_SOURCE
28 #endif
29 #ifndef _POSIX_C_SOURCE
30 # define _POSIX_C_SOURCE 200112L
31 #endif
32 #ifndef _REENTRANT
33 # define _REENTRANT
34 #endif
36 /* Disable non-standard extensions */
37 #ifdef _BSD_SOURCE
38 # undef _BSD_SOURCE
39 #endif
40 #ifdef _SVID_SOURCE
41 # undef _SVID_SOURCE
42 #endif
43 #ifdef _GNU_SOURCE
44 # undef _GNU_SOURCE
45 #endif
47 #if !defined(__GNUC__) || !__GNUC__
48 # define __attribute__(x) /**/
49 #endif
51 #include <stdlib.h>
52 #include <stdio.h>
53 #include <unistd.h>
54 #include <sys/types.h>
55 #include <sys/socket.h>
56 #include <sys/un.h>
57 #include <string.h>
58 #include <assert.h>
59 #include <errno.h>
60 #include <netdb.h>
62 #include "client.h"
64 /* NI_MAXHOST has been obsoleted by RFC 3493 which is a reason for SunOS 5.11
65 * to no longer define it. We'll use the old, RFC 2553 value here. */
66 #ifndef NI_MAXHOST
67 # define NI_MAXHOST 1025
68 #endif
70 /* Secure/static macros. They work like `strcpy' and `strcat', but assure null
71 * termination. They work for static buffers only, because they use `sizeof'.
72 * The `SSTRCATF' combines the functionality of `snprintf' and `strcat' which
73 * is very useful to add formatted stuff to the end of a buffer. */
74 #define SSTRCPY(d,s) do { \
75 strncpy ((d), (s), sizeof (d)); \
76 (d)[sizeof (d) - 1] = 0; \
77 } while (0)
79 #define SSTRCAT(d,s) do { \
80 strncat ((d), (s), sizeof (d)); \
81 (d)[sizeof (d) - 1] = 0; \
82 } while (0)
84 #define SSTRCATF(d, ...) do { \
85 char _b[sizeof (d)]; \
86 snprintf (_b, sizeof (_b), __VA_ARGS__); \
87 _b[sizeof (_b) - 1] = 0; \
88 SSTRCAT ((d), _b); \
89 } while (0)
92 #define LCC_SET_ERRSTR(c, ...) do { \
93 snprintf ((c)->errbuf, sizeof ((c)->errbuf), __VA_ARGS__); \
94 (c)->errbuf[sizeof ((c)->errbuf) - 1] = 0; \
95 } while (0)
97 #if 1
98 # define LCC_DEBUG(...) printf (__VA_ARGS__)
99 #else
100 # define LCC_DEBUG(...) /**/
101 #endif
103 /*
104 * Types
105 */
106 struct lcc_connection_s
107 {
108 FILE *fh;
109 char errbuf[1024];
110 };
112 struct lcc_response_s
113 {
114 int status;
115 char message[1024];
116 char **lines;
117 size_t lines_num;
118 };
119 typedef struct lcc_response_s lcc_response_t;
121 /*
122 * Private functions
123 */
124 static int lcc_set_errno (lcc_connection_t *c, int err) /* {{{ */
125 {
126 if (c == NULL)
127 return (-1);
129 strerror_r (err, c->errbuf, sizeof (c->errbuf));
130 c->errbuf[sizeof (c->errbuf) - 1] = 0;
132 return (0);
133 } /* }}} int lcc_set_errno */
135 /* lcc_strdup: Since `strdup' is an XSI extension, we provide our own version
136 * here. */
137 __attribute__((malloc, nonnull (1)))
138 static char *lcc_strdup (const char *str) /* {{{ */
139 {
140 size_t strsize;
141 char *ret;
143 strsize = strlen (str) + 1;
144 ret = (char *) malloc (strsize);
145 if (ret != NULL)
146 memcpy (ret, str, strsize);
147 return (ret);
148 } /* }}} char *lcc_strdup */
150 __attribute__((nonnull (1, 2)))
151 static char *lcc_strescape (char *dest, char *src, size_t dest_size) /* {{{ */
152 {
153 size_t dest_pos;
154 size_t src_pos;
156 dest_pos = 0;
157 src_pos = 0;
159 assert (dest_size >= 3);
161 dest[dest_pos] = '"';
162 dest_pos++;
164 while (42)
165 {
166 if ((dest_pos == (dest_size - 2))
167 || (src[src_pos] == 0))
168 break;
170 if ((src[src_pos] == '"') || (src[src_pos] == '\\'))
171 {
172 /* Check if there is enough space for both characters.. */
173 if (dest_pos == (dest_size - 3))
174 break;
176 dest[dest_pos] = '\\';
177 dest_pos++;
178 }
180 dest[dest_pos] = src[src_pos];
181 dest_pos++;
182 src_pos++;
183 }
185 assert (dest_pos <= (dest_size - 2));
187 dest[dest_pos] = '"';
188 dest_pos++;
190 dest[dest_pos] = 0;
191 dest_pos++;
192 src_pos++;
194 return (dest);
195 } /* }}} char *lcc_strescape */
197 /* lcc_chomp: Removes all control-characters at the end of a string. */
198 static void lcc_chomp (char *str) /* {{{ */
199 {
200 size_t str_len;
202 str_len = strlen (str);
203 while (str_len > 0)
204 {
205 if (str[str_len - 1] >= 32)
206 break;
207 str[str_len - 1] = 0;
208 str_len--;
209 }
210 } /* }}} void lcc_chomp */
212 static void lcc_response_free (lcc_response_t *res) /* {{{ */
213 {
214 size_t i;
216 if (res == NULL)
217 return;
219 for (i = 0; i < res->lines_num; i++)
220 free (res->lines[i]);
221 free (res->lines);
222 res->lines = NULL;
223 } /* }}} void lcc_response_free */
225 static int lcc_send (lcc_connection_t *c, const char *command) /* {{{ */
226 {
227 int status;
229 LCC_DEBUG ("send: --> %s\n", command);
231 status = fprintf (c->fh, "%s\r\n", command);
232 if (status < 0)
233 {
234 lcc_set_errno (c, errno);
235 return (-1);
236 }
238 return (0);
239 } /* }}} int lcc_send */
241 static int lcc_receive (lcc_connection_t *c, /* {{{ */
242 lcc_response_t *ret_res)
243 {
244 lcc_response_t res;
245 char *ptr;
246 char buffer[4096];
247 size_t i;
249 memset (&res, 0, sizeof (res));
251 /* Read the first line, containing the status and a message */
252 ptr = fgets (buffer, sizeof (buffer), c->fh);
253 if (ptr == NULL)
254 {
255 lcc_set_errno (c, errno);
256 return (-1);
257 }
258 lcc_chomp (buffer);
259 LCC_DEBUG ("receive: <-- %s\n", buffer);
261 /* Convert the leading status to an integer and make `ptr' to point to the
262 * beginning of the message. */
263 ptr = NULL;
264 errno = 0;
265 res.status = strtol (buffer, &ptr, 0);
266 if ((errno != 0) || (ptr == &buffer[0]))
267 {
268 lcc_set_errno (c, errno);
269 return (-1);
270 }
272 /* Skip white spaces after the status number */
273 while ((*ptr == ' ') || (*ptr == '\t'))
274 ptr++;
276 /* Now copy the message. */
277 strncpy (res.message, ptr, sizeof (res.message));
278 res.message[sizeof (res.message) - 1] = 0;
280 /* Error or no lines follow: We're done. */
281 if (res.status <= 0)
282 {
283 memcpy (ret_res, &res, sizeof (res));
284 return (0);
285 }
287 /* Allocate space for the char-pointers */
288 res.lines_num = (size_t) res.status;
289 res.status = 0;
290 res.lines = (char **) malloc (res.lines_num * sizeof (char *));
291 if (res.lines == NULL)
292 {
293 lcc_set_errno (c, ENOMEM);
294 return (-1);
295 }
297 /* Now receive all the lines */
298 for (i = 0; i < res.lines_num; i++)
299 {
300 ptr = fgets (buffer, sizeof (buffer), c->fh);
301 if (ptr == NULL)
302 {
303 lcc_set_errno (c, errno);
304 break;
305 }
306 lcc_chomp (buffer);
307 LCC_DEBUG ("receive: <-- %s\n", buffer);
309 res.lines[i] = lcc_strdup (buffer);
310 if (res.lines[i] == NULL)
311 {
312 lcc_set_errno (c, ENOMEM);
313 break;
314 }
315 }
317 /* Check if the for-loop exited with an error. */
318 if (i < res.lines_num)
319 {
320 while (i > 0)
321 {
322 i--;
323 free (res.lines[i]);
324 }
325 free (res.lines);
326 return (-1);
327 }
329 memcpy (ret_res, &res, sizeof (res));
330 return (0);
331 } /* }}} int lcc_receive */
333 static int lcc_sendreceive (lcc_connection_t *c, /* {{{ */
334 const char *command, lcc_response_t *ret_res)
335 {
336 lcc_response_t res;
337 int status;
339 status = lcc_send (c, command);
340 if (status != 0)
341 return (status);
343 memset (&res, 0, sizeof (res));
344 status = lcc_receive (c, &res);
345 if (status == 0)
346 memcpy (ret_res, &res, sizeof (*ret_res));
348 return (status);
349 } /* }}} int lcc_sendreceive */
351 static int lcc_open_unixsocket (lcc_connection_t *c, const char *path) /* {{{ */
352 {
353 struct sockaddr_un sa;
354 int fd;
355 int status;
357 assert (c != NULL);
358 assert (c->fh == NULL);
359 assert (path != NULL);
361 fd = socket (PF_UNIX, SOCK_STREAM, /* protocol = */ 0);
362 if (fd < 0)
363 {
364 lcc_set_errno (c, errno);
365 return (-1);
366 }
368 memset (&sa, 0, sizeof (sa));
369 sa.sun_family = AF_UNIX;
370 strncpy (sa.sun_path, path, sizeof (sa.sun_path) - 1);
372 status = connect (fd, (struct sockaddr *) &sa, sizeof (sa));
373 if (status != 0)
374 {
375 lcc_set_errno (c, errno);
376 close (fd);
377 return (-1);
378 }
380 c->fh = fdopen (fd, "r+");
381 if (c->fh == NULL)
382 {
383 lcc_set_errno (c, errno);
384 close (fd);
385 return (-1);
386 }
388 return (0);
389 } /* }}} int lcc_open_unixsocket */
391 static int lcc_open_netsocket (lcc_connection_t *c, /* {{{ */
392 const char *addr_orig)
393 {
394 struct addrinfo ai_hints;
395 struct addrinfo *ai_res;
396 struct addrinfo *ai_ptr;
397 char addr_copy[NI_MAXHOST];
398 char *addr;
399 char *port;
400 int fd;
401 int status;
403 assert (c != NULL);
404 assert (c->fh == NULL);
405 assert (addr_orig != NULL);
407 strncpy(addr_copy, addr_orig, sizeof(addr_copy));
408 addr_copy[sizeof(addr_copy) - 1] = '\0';
409 addr = addr_copy;
411 memset (&ai_hints, 0, sizeof (ai_hints));
412 ai_hints.ai_flags = 0;
413 #ifdef AI_ADDRCONFIG
414 ai_hints.ai_flags |= AI_ADDRCONFIG;
415 #endif
416 ai_hints.ai_family = AF_UNSPEC;
417 ai_hints.ai_socktype = SOCK_STREAM;
419 port = NULL;
420 if (*addr == '[') /* IPv6+port format */
421 {
422 /* `addr' is something like "[2001:780:104:2:211:24ff:feab:26f8]:12345" */
423 addr++;
425 port = strchr (addr, ']');
426 if (port == NULL)
427 {
428 LCC_SET_ERRSTR (c, "malformed address: %s", addr_orig);
429 return (-1);
430 }
431 *port = 0;
432 port++;
434 if (*port == ':')
435 port++;
436 else if (*port == 0)
437 port = NULL;
438 else
439 {
440 LCC_SET_ERRSTR (c, "garbage after address: %s", port);
441 return (-1);
442 }
443 } /* if (*addr = ']') */
444 else if (strchr (addr, '.') != NULL) /* Hostname or IPv4 */
445 {
446 port = strrchr (addr, ':');
447 if (port != NULL)
448 {
449 *port = 0;
450 port++;
451 }
452 }
454 ai_res = NULL;
455 status = getaddrinfo (addr,
456 port == NULL ? LCC_DEFAULT_PORT : port,
457 &ai_hints, &ai_res);
458 if (status != 0)
459 {
460 LCC_SET_ERRSTR (c, "getaddrinfo: %s", gai_strerror (status));
461 return (-1);
462 }
464 for (ai_ptr = ai_res; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next)
465 {
466 fd = socket (ai_ptr->ai_family, ai_ptr->ai_socktype, ai_ptr->ai_protocol);
467 if (fd < 0)
468 {
469 status = errno;
470 fd = -1;
471 continue;
472 }
474 status = connect (fd, ai_ptr->ai_addr, ai_ptr->ai_addrlen);
475 if (status != 0)
476 {
477 status = errno;
478 close (fd);
479 fd = -1;
480 continue;
481 }
483 c->fh = fdopen (fd, "r+");
484 if (c->fh == NULL)
485 {
486 status = errno;
487 close (fd);
488 fd = -1;
489 continue;
490 }
492 assert (status == 0);
493 break;
494 } /* for (ai_ptr) */
496 if (status != 0)
497 {
498 lcc_set_errno (c, status);
499 return (-1);
500 }
502 return (0);
503 } /* }}} int lcc_open_netsocket */
505 static int lcc_open_socket (lcc_connection_t *c, const char *addr) /* {{{ */
506 {
507 int status = 0;
509 if (addr == NULL)
510 return (-1);
512 assert (c != NULL);
513 assert (c->fh == NULL);
514 assert (addr != NULL);
516 if (strncmp ("unix:", addr, strlen ("unix:")) == 0)
517 status = lcc_open_unixsocket (c, addr + strlen ("unix:"));
518 else if (addr[0] == '/')
519 status = lcc_open_unixsocket (c, addr);
520 else
521 status = lcc_open_netsocket (c, addr);
523 return (status);
524 } /* }}} int lcc_open_socket */
526 /*
527 * Public functions
528 */
529 int lcc_connect (const char *address, lcc_connection_t **ret_con) /* {{{ */
530 {
531 lcc_connection_t *c;
533 if (address == NULL)
534 return (-1);
536 if (ret_con == NULL)
537 return (-1);
539 c = (lcc_connection_t *) malloc (sizeof (*c));
540 if (c == NULL)
541 return (-1);
542 memset (c, 0, sizeof (*c));
544 *ret_con = c;
545 return (lcc_open_socket (c, address));
546 } /* }}} int lcc_connect */
548 int lcc_disconnect (lcc_connection_t *c) /* {{{ */
549 {
550 if (c == NULL)
551 return (-1);
553 if (c->fh != NULL)
554 {
555 fclose (c->fh);
556 c->fh = NULL;
557 }
559 free (c);
560 return (0);
561 } /* }}} int lcc_disconnect */
563 int lcc_getval (lcc_connection_t *c, lcc_identifier_t *ident, /* {{{ */
564 size_t *ret_values_num, gauge_t **ret_values, char ***ret_values_names)
565 {
566 char ident_str[6 * LCC_NAME_LEN];
567 char ident_esc[12 * LCC_NAME_LEN];
568 char command[14 * LCC_NAME_LEN];
570 lcc_response_t res;
571 size_t values_num;
572 gauge_t *values = NULL;
573 char **values_names = NULL;
575 size_t i;
576 int status;
578 if (c == NULL)
579 return (-1);
581 if (ident == NULL)
582 {
583 lcc_set_errno (c, EINVAL);
584 return (-1);
585 }
587 /* Build a commend with an escaped version of the identifier string. */
588 status = lcc_identifier_to_string (c, ident_str, sizeof (ident_str), ident);
589 if (status != 0)
590 return (status);
592 snprintf (command, sizeof (command), "GETVAL %s",
593 lcc_strescape (ident_esc, ident_str, sizeof (ident_esc)));
594 command[sizeof (command) - 1] = 0;
596 /* Send talk to the daemon.. */
597 status = lcc_sendreceive (c, command, &res);
598 if (status != 0)
599 return (status);
601 if (res.status != 0)
602 {
603 LCC_SET_ERRSTR (c, "Server error: %s", res.message);
604 lcc_response_free (&res);
605 return (-1);
606 }
608 values_num = res.lines_num;
610 #define BAIL_OUT(e) do { \
611 lcc_set_errno (c, (e)); \
612 free (values); \
613 if (values_names != NULL) { \
614 for (i = 0; i < values_num; i++) { \
615 free (values_names[i]); \
616 } \
617 } \
618 free (values_names); \
619 lcc_response_free (&res); \
620 return (-1); \
621 } while (0)
623 /* If neither the values nor the names are requested, return here.. */
624 if ((ret_values == NULL) && (ret_values_names == NULL))
625 {
626 if (ret_values_num != NULL)
627 *ret_values_num = values_num;
628 lcc_response_free (&res);
629 return (0);
630 }
632 /* Allocate space for the values */
633 if (ret_values != NULL)
634 {
635 values = (gauge_t *) malloc (values_num * sizeof (*values));
636 if (values == NULL)
637 BAIL_OUT (ENOMEM);
638 }
640 if (ret_values_names != NULL)
641 {
642 values_names = (char **) calloc (values_num, sizeof (*values_names));
643 if (values_names == NULL)
644 BAIL_OUT (ENOMEM);
645 }
647 for (i = 0; i < res.lines_num; i++)
648 {
649 char *key;
650 char *value;
651 char *endptr;
653 key = res.lines[i];
654 value = strchr (key, '=');
655 if (value == NULL)
656 BAIL_OUT (EPROTO);
658 *value = 0;
659 value++;
661 if (values != NULL)
662 {
663 endptr = NULL;
664 errno = 0;
665 values[i] = strtod (value, &endptr);
667 if ((endptr == value) || (errno != 0))
668 BAIL_OUT (errno);
669 }
671 if (values_names != NULL)
672 {
673 values_names[i] = lcc_strdup (key);
674 if (values_names[i] == NULL)
675 BAIL_OUT (ENOMEM);
676 }
677 } /* for (i = 0; i < res.lines_num; i++) */
679 if (ret_values_num != NULL)
680 *ret_values_num = values_num;
681 if (ret_values != NULL)
682 *ret_values = values;
683 if (ret_values_names != NULL)
684 *ret_values_names = values_names;
686 return (0);
687 } /* }}} int lcc_getval */
689 int lcc_putval (lcc_connection_t *c, const lcc_value_list_t *vl) /* {{{ */
690 {
691 char ident_str[6 * LCC_NAME_LEN];
692 char ident_esc[12 * LCC_NAME_LEN];
693 char command[1024] = "";
694 lcc_response_t res;
695 int status;
696 size_t i;
698 if ((c == NULL) || (vl == NULL) || (vl->values_len < 1)
699 || (vl->values == NULL) || (vl->values_types == NULL))
700 {
701 lcc_set_errno (c, EINVAL);
702 return (-1);
703 }
705 status = lcc_identifier_to_string (c, ident_str, sizeof (ident_str),
706 &vl->identifier);
707 if (status != 0)
708 return (status);
710 SSTRCATF (command, "PUTVAL %s",
711 lcc_strescape (ident_esc, ident_str, sizeof (ident_esc)));
713 if (vl->interval > 0)
714 SSTRCATF (command, " interval=%i", vl->interval);
716 if (vl->time > 0)
717 SSTRCATF (command, "%u", (unsigned int) vl->time);
718 else
719 SSTRCAT (command, "N");
721 for (i = 0; i < vl->values_len; i++)
722 {
723 if (vl->values_types[i] == LCC_TYPE_COUNTER)
724 SSTRCATF (command, ":%"PRIu64, vl->values[i].counter);
725 else if (vl->values_types[i] == LCC_TYPE_GAUGE)
726 {
727 if (isnan (vl->values[i].gauge))
728 SSTRCPY (command, ":U");
729 else
730 SSTRCATF (command, ":%g", vl->values[i].gauge);
731 }
732 } /* for (i = 0; i < vl->values_len; i++) */
734 status = lcc_sendreceive (c, command, &res);
735 if (status != 0)
736 return (status);
738 if (res.status != 0)
739 {
740 LCC_SET_ERRSTR (c, "Server error: %s", res.message);
741 lcc_response_free (&res);
742 return (-1);
743 }
745 lcc_response_free (&res);
746 return (0);
747 } /* }}} int lcc_putval */
749 int lcc_flush (lcc_connection_t *c, const char *plugin, /* {{{ */
750 lcc_identifier_t *ident, int timeout)
751 {
752 char command[1024];
753 lcc_response_t res;
754 int status;
756 if (c == NULL)
757 {
758 lcc_set_errno (c, EINVAL);
759 return (-1);
760 }
762 SSTRCPY (command, "FLUSH");
764 if (timeout > 0)
765 SSTRCATF (command, " timeout=%i", timeout);
767 if (plugin != NULL)
768 {
769 char buffer[2 * LCC_NAME_LEN];
770 SSTRCATF (command, " plugin=%s",
771 lcc_strescape (buffer, plugin, sizeof (buffer)));
772 }
774 if (ident != NULL)
775 {
776 char ident_str[6 * LCC_NAME_LEN];
777 char ident_esc[12 * LCC_NAME_LEN];
779 status = lcc_identifier_to_string (c, ident_str, sizeof (ident_str), ident);
780 if (status != 0)
781 return (status);
783 SSTRCATF (command, " identifier=%s",
784 lcc_strescape (ident_esc, ident_str, sizeof (ident_esc)));
785 }
787 status = lcc_sendreceive (c, command, &res);
788 if (status != 0)
789 return (status);
791 if (res.status != 0)
792 {
793 LCC_SET_ERRSTR (c, "Server error: %s", res.message);
794 lcc_response_free (&res);
795 return (-1);
796 }
798 lcc_response_free (&res);
799 return (0);
800 } /* }}} int lcc_flush */
802 /* TODO: Implement lcc_putnotif */
804 int lcc_listval (lcc_connection_t *c, /* {{{ */
805 lcc_identifier_t **ret_ident, size_t *ret_ident_num)
806 {
807 lcc_response_t res;
808 size_t i;
809 int status;
811 lcc_identifier_t *ident;
812 size_t ident_num;
814 if (c == NULL)
815 return (-1);
817 if ((ret_ident == NULL) || (ret_ident_num == NULL))
818 {
819 lcc_set_errno (c, EINVAL);
820 return (-1);
821 }
823 status = lcc_sendreceive (c, "LISTVAL", &res);
824 if (status != 0)
825 return (status);
827 if (res.status != 0)
828 {
829 LCC_SET_ERRSTR (c, "Server error: %s", res.message);
830 lcc_response_free (&res);
831 return (-1);
832 }
834 ident_num = res.lines_num;
835 ident = (lcc_identifier_t *) malloc (ident_num * sizeof (*ident));
836 if (ident == NULL)
837 {
838 lcc_response_free (&res);
839 lcc_set_errno (c, ENOMEM);
840 return (-1);
841 }
843 for (i = 0; i < res.lines_num; i++)
844 {
845 char *time_str;
846 char *ident_str;
848 /* First field is the time. */
849 time_str = res.lines[i];
851 /* Set `ident_str' to the beginning of the second field. */
852 ident_str = time_str;
853 while ((*ident_str != ' ') && (*ident_str != '\t') && (*ident_str != 0))
854 ident_str++;
855 while ((*ident_str == ' ') || (*ident_str == '\t'))
856 {
857 *ident_str = 0;
858 ident_str++;
859 }
861 if (*ident_str == 0)
862 {
863 lcc_set_errno (c, EPROTO);
864 status = -1;
865 break;
866 }
868 status = lcc_string_to_identifier (c, ident + i, ident_str);
869 if (status != 0)
870 break;
871 }
873 lcc_response_free (&res);
875 if (status != 0)
876 {
877 free (ident);
878 return (-1);
879 }
881 *ret_ident = ident;
882 *ret_ident_num = ident_num;
884 return (0);
885 } /* }}} int lcc_listval */
887 const char *lcc_strerror (lcc_connection_t *c) /* {{{ */
888 {
889 if (c == NULL)
890 return ("Invalid object");
891 return (c->errbuf);
892 } /* }}} const char *lcc_strerror */
894 int lcc_identifier_to_string (lcc_connection_t *c, /* {{{ */
895 char *string, size_t string_size, const lcc_identifier_t *ident)
896 {
897 if ((string == NULL) || (string_size < 6) || (ident == NULL))
898 {
899 lcc_set_errno (c, EINVAL);
900 return (-1);
901 }
903 if (ident->plugin_instance[0] == 0)
904 {
905 if (ident->type_instance[0] == 0)
906 snprintf (string, string_size, "%s/%s/%s",
907 ident->host,
908 ident->plugin,
909 ident->type);
910 else
911 snprintf (string, string_size, "%s/%s/%s-%s",
912 ident->host,
913 ident->plugin,
914 ident->type,
915 ident->type_instance);
916 }
917 else
918 {
919 if (ident->type_instance[0] == 0)
920 snprintf (string, string_size, "%s/%s-%s/%s",
921 ident->host,
922 ident->plugin,
923 ident->plugin_instance,
924 ident->type);
925 else
926 snprintf (string, string_size, "%s/%s-%s/%s-%s",
927 ident->host,
928 ident->plugin,
929 ident->plugin_instance,
930 ident->type,
931 ident->type_instance);
932 }
934 string[string_size - 1] = 0;
935 return (0);
936 } /* }}} int lcc_identifier_to_string */
938 int lcc_string_to_identifier (lcc_connection_t *c, /* {{{ */
939 lcc_identifier_t *ident, const char *string)
940 {
941 char *string_copy;
942 char *host;
943 char *plugin;
944 char *plugin_instance;
945 char *type;
946 char *type_instance;
948 string_copy = lcc_strdup (string);
949 if (string_copy == NULL)
950 {
951 lcc_set_errno (c, ENOMEM);
952 return (-1);
953 }
955 host = string_copy;
956 plugin = strchr (host, '/');
957 if (plugin == NULL)
958 {
959 LCC_SET_ERRSTR (c, "Malformed identifier string: %s", string);
960 free (string_copy);
961 return (-1);
962 }
963 *plugin = 0;
964 plugin++;
966 type = strchr (plugin, '/');
967 if (type == NULL)
968 {
969 LCC_SET_ERRSTR (c, "Malformed identifier string: %s", string);
970 free (string_copy);
971 return (-1);
972 }
973 *type = 0;
974 type++;
976 plugin_instance = strchr (plugin, '-');
977 if (plugin_instance != NULL)
978 {
979 *plugin_instance = 0;
980 plugin_instance++;
981 }
983 type_instance = strchr (type, '-');
984 if (type_instance != NULL)
985 {
986 *type_instance = 0;
987 type_instance++;
988 }
990 memset (ident, 0, sizeof (*ident));
992 SSTRCPY (ident->host, host);
993 SSTRCPY (ident->plugin, plugin);
994 if (plugin_instance != NULL)
995 SSTRCPY (ident->plugin_instance, plugin_instance);
996 SSTRCPY (ident->type, type);
997 if (type_instance != NULL)
998 SSTRCPY (ident->type_instance, type_instance);
1000 free (string_copy);
1001 return (0);
1002 } /* }}} int lcc_string_to_identifier */
1004 /* vim: set sw=2 sts=2 et fdm=marker : */