/**
* libcollectdclient - src/libcollectdclient/client.c
- * Copyright (C) 2008 Florian octo Forster
+ * Copyright (C) 2008-2012 Florian octo Forster
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; only version 2 of the License is applicable.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
*
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
*
* Authors:
- * Florian octo Forster <octo at verplant.org>
+ * Florian octo Forster <octo at collectd.org>
**/
-/* Set to C99 and POSIX code */
-#ifndef _ISOC99_SOURCE
-# define _ISOC99_SOURCE
-#endif
-#ifndef _POSIX_SOURCE
-# define _POSIX_SOURCE
-#endif
-#ifndef _POSIX_C_SOURCE
-# define _POSIX_C_SOURCE 200112L
-#endif
-#ifndef _REENTRANT
-# define _REENTRANT
-#endif
-
-/* Disable non-standard extensions */
-#ifdef _BSD_SOURCE
-# undef _BSD_SOURCE
-#endif
-#ifdef _SVID_SOURCE
-# undef _SVID_SOURCE
-#endif
-#ifdef _GNU_SOURCE
-# undef _GNU_SOURCE
+#if HAVE_CONFIG_H
+# include "config.h"
#endif
#if !defined(__GNUC__) || !__GNUC__
# define __attribute__(x) /**/
#endif
-#if HAVE_CONFIG_H
-# include "config.h"
-#endif
+#include "collectd/lcc_features.h"
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <netdb.h>
-#include "client.h"
+#include "collectd/client.h"
/* NI_MAXHOST has been obsoleted by RFC 3493 which is a reason for SunOS 5.11
* to no longer define it. We'll use the old, RFC 2553 value here. */
# define NI_MAXHOST 1025
#endif
+/* OpenBSD doesn't have EPROTO, FreeBSD doesn't have EILSEQ. Oh what joy! */
+#ifndef EILSEQ
+# ifdef EPROTO
+# define EILSEQ EPROTO
+# else
+# define EILSEQ EINVAL
+# endif
+#endif
+
/* Secure/static macros. They work like `strcpy' and `strcat', but assure null
* termination. They work for static buffers only, because they use `sizeof'.
* The `SSTRCATF' combines the functionality of `snprintf' and `strcat' which
} while (0)
#define SSTRCAT(d,s) do { \
- strncat ((d), (s), sizeof (d)); \
+ size_t _l = strlen (d); \
+ strncpy ((d) + _l, (s), sizeof (d) - _l); \
(d)[sizeof (d) - 1] = 0; \
} while (0)
_b[sizeof (_b) - 1] = 0; \
SSTRCAT ((d), _b); \
} while (0)
-
+
#define LCC_SET_ERRSTR(c, ...) do { \
snprintf ((c)->errbuf, sizeof ((c)->errbuf), __VA_ARGS__); \
/*
* Private functions
*/
+/* Even though Posix requires "strerror_r" to return an "int",
+ * some systems (e.g. the GNU libc) return a "char *" _and_
+ * ignore the second argument ... -tokkee */
+static char *sstrerror (int errnum, char *buf, size_t buflen)
+{
+ buf[0] = 0;
+
+#if !HAVE_STRERROR_R
+ snprintf (buf, buflen, "Error #%i; strerror_r is not available.", errnum);
+/* #endif !HAVE_STRERROR_R */
+
+#elif STRERROR_R_CHAR_P
+ {
+ char *temp;
+ temp = strerror_r (errnum, buf, buflen);
+ if (buf[0] == 0)
+ {
+ if ((temp != NULL) && (temp != buf) && (temp[0] != 0))
+ strncpy (buf, temp, buflen);
+ else
+ strncpy (buf, "strerror_r did not return "
+ "an error message", buflen);
+ }
+ }
+/* #endif STRERROR_R_CHAR_P */
+
+#else
+ if (strerror_r (errnum, buf, buflen) != 0)
+ {
+ snprintf (buf, buflen, "Error #%i; "
+ "Additionally, strerror_r failed.",
+ errnum);
+ }
+#endif /* STRERROR_R_CHAR_P */
+
+ buf[buflen - 1] = 0;
+
+ return (buf);
+} /* char *sstrerror */
+
static int lcc_set_errno (lcc_connection_t *c, int err) /* {{{ */
{
if (c == NULL)
return (-1);
- strerror_r (err, c->errbuf, sizeof (c->errbuf));
+ sstrerror (err, c->errbuf, sizeof (c->errbuf));
c->errbuf[sizeof (c->errbuf) - 1] = 0;
return (0);
} /* }}} int lcc_set_errno */
-/* lcc_strdup: Since `strdup' is an XSI extension, we provide our own version
- * here. */
-__attribute__((malloc, nonnull (1)))
-static char *lcc_strdup (const char *str) /* {{{ */
-{
- size_t strsize;
- char *ret;
-
- strsize = strlen (str) + 1;
- ret = (char *) malloc (strsize);
- if (ret != NULL)
- memcpy (ret, str, strsize);
- return (ret);
-} /* }}} char *lcc_strdup */
-
-__attribute__((nonnull (1, 2)))
static char *lcc_strescape (char *dest, const char *src, size_t dest_size) /* {{{ */
{
size_t dest_pos;
size_t src_pos;
+ if ((dest == NULL) || (src == NULL))
+ return (NULL);
+
dest_pos = 0;
src_pos = 0;
lcc_chomp (buffer);
LCC_DEBUG ("receive: <-- %s\n", buffer);
- res.lines[i] = lcc_strdup (buffer);
+ res.lines[i] = strdup (buffer);
if (res.lines[i] == NULL)
{
lcc_set_errno (c, ENOMEM);
lcc_response_t res;
int status;
+ if (c->fh == NULL)
+ {
+ lcc_set_errno (c, EBADF);
+ return (-1);
+ }
+
status = lcc_send (c, command);
if (status != 0)
return (status);
assert (c->fh == NULL);
assert (path != NULL);
- fd = socket (PF_UNIX, SOCK_STREAM, /* protocol = */ 0);
+ /* Don't use PF_UNIX here, because it's broken on Mac OS X (10.4, possibly
+ * others). */
+ fd = socket (AF_UNIX, SOCK_STREAM, /* protocol = */ 0);
if (fd < 0)
{
lcc_set_errno (c, errno);
/*
* Public functions
*/
+unsigned int lcc_version (void) /* {{{ */
+{
+ return (LCC_VERSION);
+} /* }}} unsigned int lcc_version */
+
+const char *lcc_version_string (void) /* {{{ */
+{
+ return (LCC_VERSION_STRING);
+} /* }}} const char *lcc_version_string */
+
+const char *lcc_version_extra (void) /* {{{ */
+{
+ return (LCC_VERSION_EXTRA);
+} /* }}} const char *lcc_version_extra */
+
int lcc_connect (const char *address, lcc_connection_t **ret_con) /* {{{ */
{
lcc_connection_t *c;
+ int status;
if (address == NULL)
return (-1);
return (-1);
memset (c, 0, sizeof (*c));
+ status = lcc_open_socket (c, address);
+ if (status != 0)
+ {
+ lcc_disconnect (c);
+ return (status);
+ }
+
*ret_con = c;
- return (lcc_open_socket (c, address));
+ return (0);
} /* }}} int lcc_connect */
int lcc_disconnect (lcc_connection_t *c) /* {{{ */
key = res.lines[i];
value = strchr (key, '=');
if (value == NULL)
- BAIL_OUT (EPROTO);
+ BAIL_OUT (EILSEQ);
*value = 0;
value++;
if (values_names != NULL)
{
- values_names[i] = lcc_strdup (key);
+ values_names[i] = strdup (key);
if (values_names[i] == NULL)
BAIL_OUT (ENOMEM);
}
if (ret_values_names != NULL)
*ret_values_names = values_names;
+ lcc_response_free (&res);
+
return (0);
} /* }}} int lcc_getval */
SSTRCATF (command, "PUTVAL %s",
lcc_strescape (ident_esc, ident_str, sizeof (ident_esc)));
- if (vl->interval > 0)
- SSTRCATF (command, " interval=%i", vl->interval);
+ if (vl->interval > 0.0)
+ SSTRCATF (command, " interval=%.3f", vl->interval);
- if (vl->time > 0)
- SSTRCATF (command, "%u", (unsigned int) vl->time);
+ if (vl->time > 0.0)
+ SSTRCATF (command, " %.3f", vl->time);
else
- SSTRCAT (command, "N");
+ SSTRCAT (command, " N");
for (i = 0; i < vl->values_len; i++)
{
else if (vl->values_types[i] == LCC_TYPE_GAUGE)
{
if (isnan (vl->values[i].gauge))
- SSTRCPY (command, ":U");
+ SSTRCATF (command, ":U");
else
SSTRCATF (command, ":%g", vl->values[i].gauge);
}
+ else if (vl->values_types[i] == LCC_TYPE_DERIVE)
+ SSTRCATF (command, ":%"PRIu64, vl->values[i].derive);
+ else if (vl->values_types[i] == LCC_TYPE_ABSOLUTE)
+ SSTRCATF (command, ":%"PRIu64, vl->values[i].absolute);
+
} /* for (i = 0; i < vl->values_len; i++) */
status = lcc_sendreceive (c, command, &res);
int lcc_flush (lcc_connection_t *c, const char *plugin, /* {{{ */
lcc_identifier_t *ident, int timeout)
{
- char command[1024];
+ char command[1024] = "";
lcc_response_t res;
int status;
if (*ident_str == 0)
{
- lcc_set_errno (c, EPROTO);
+ lcc_set_errno (c, EILSEQ);
status = -1;
break;
}
char *type;
char *type_instance;
- string_copy = lcc_strdup (string);
+ string_copy = strdup (string);
if (string_copy == NULL)
{
lcc_set_errno (c, ENOMEM);
return (0);
} /* }}} int lcc_string_to_identifier */
+int lcc_identifier_compare (const lcc_identifier_t *i0, /* {{{ */
+ const lcc_identifier_t *i1)
+{
+ int status;
+
+ if ((i0 == NULL) && (i1 == NULL))
+ return (0);
+ else if (i0 == NULL)
+ return (-1);
+ else if (i1 == NULL)
+ return (1);
+
+#define CMP_FIELD(f) do { \
+ status = strcmp (i0->f, i1->f); \
+ if (status != 0) \
+ return (status); \
+} while (0);
+
+ CMP_FIELD (host);
+ CMP_FIELD (plugin);
+ CMP_FIELD (plugin_instance);
+ CMP_FIELD (type);
+ CMP_FIELD (type_instance);
+
+#undef CMP_FIELD
+
+ return (0);
+} /* }}} int lcc_identifier_compare */
+
+int lcc_sort_identifiers (lcc_connection_t *c, /* {{{ */
+ lcc_identifier_t *idents, size_t idents_num)
+{
+ if (idents == NULL)
+ {
+ lcc_set_errno (c, EINVAL);
+ return (-1);
+ }
+
+ qsort (idents, idents_num, sizeof (*idents),
+ (void *) lcc_identifier_compare);
+ return (0);
+} /* }}} int lcc_sort_identifiers */
+
/* vim: set sw=2 sts=2 et fdm=marker : */
projects / collectd.git / blobdiff