2 * collectd - src/mbmon.c
3 * Copyright (C) 2006 Flavio Stanchina
4 * Based on the hddtemp plugin.
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; either version 2 of the License, or (at your
9 * option) any later version.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 * Flavio Stanchina <flavio at stanchina.net>
27 #include "configfile.h"
29 #if HAVE_NETDB_H && HAVE_SYS_SOCKET_H && HAVE_NETINET_IN_H && HAVE_NETINET_TCP_H
31 # include <sys/socket.h>
32 # include <netinet/in.h>
33 # include <netinet/tcp.h>
34 # define MBMON_HAVE_READ 1
36 # define MBMON_HAVE_READ 0
39 #define MBMON_DEF_HOST "127.0.0.1"
40 #define MBMON_DEF_PORT "411" /* the default for Debian */
42 static data_source_t data_source_fanspeed[1] =
44 {"value", DS_TYPE_GAUGE, 0, NAN}
47 static data_set_t fanspeed_ds =
49 "fanspeed", 1, data_source_fanspeed
52 static data_source_t data_source_temperature[1] =
54 {"value", DS_TYPE_GAUGE, -273.15, NAN}
57 static data_set_t temperature_ds =
59 "temperature", 1, data_source_temperature
62 static data_source_t data_source_voltage[1] =
64 {"voltage", DS_TYPE_GAUGE, NAN, NAN}
67 static data_set_t voltage_ds =
69 "voltage", 1, data_source_voltage
72 static const char *config_keys[] =
78 static int config_keys_num = 2;
81 static char *mbmon_host = NULL;
82 static char *mbmon_port = NULL;
89 * Connect to the mbmon daemon and receive data.
92 * `buffer' The buffer where we put the received ascii string.
93 * `buffer_size' Size of the buffer
96 * >= 0 if ok, < 0 otherwise.
99 * Example of possible strings, as received from daemon:
110 * we need to create a new socket each time. Is there another way?
111 * Hm, maybe we can re-use the `sockaddr' structure? -octo
113 static int mbmon_query_daemon (char *buffer, int buffer_size)
122 struct addrinfo ai_hints;
123 struct addrinfo *ai_list, *ai_ptr;
126 memset (&ai_hints, '\0', sizeof (ai_hints));
127 ai_hints.ai_flags = AI_ADDRCONFIG;
128 ai_hints.ai_family = PF_UNSPEC;
129 ai_hints.ai_socktype = SOCK_STREAM;
130 ai_hints.ai_protocol = IPPROTO_TCP;
134 host = MBMON_DEF_HOST;
138 port = MBMON_DEF_PORT;
140 if ((ai_return = getaddrinfo (host, port, &ai_hints, &ai_list)) != 0)
143 ERROR ("mbmon: getaddrinfo (%s, %s): %s",
145 (ai_return == EAI_SYSTEM)
146 ? sstrerror (errno, errbuf, sizeof (errbuf))
147 : gai_strerror (ai_return));
152 for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next)
154 /* create our socket descriptor */
155 if ((fd = socket (ai_ptr->ai_family, ai_ptr->ai_socktype, ai_ptr->ai_protocol)) < 0)
158 ERROR ("mbmon: socket: %s",
159 sstrerror (errno, errbuf,
164 /* connect to the mbmon daemon */
165 if (connect (fd, (struct sockaddr *) ai_ptr->ai_addr, ai_ptr->ai_addrlen))
168 DEBUG ("mbmon: connect (%s, %s): %s", host, port,
169 sstrerror (errno, errbuf,
176 /* A socket could be opened and connecting succeeded. We're
181 freeaddrinfo (ai_list);
185 ERROR ("mbmon: Could not connect to daemon.");
189 /* receive data from the mbmon daemon */
190 memset (buffer, '\0', buffer_size);
193 while ((status = read (fd, buffer + buffer_fill, buffer_size - buffer_fill)) != 0)
199 if ((errno == EAGAIN) || (errno == EINTR))
202 ERROR ("mbmon: Error reading from socket: %s",
203 sstrerror (errno, errbuf,
208 buffer_fill += status;
210 if (buffer_fill >= buffer_size)
214 if (buffer_fill >= buffer_size)
216 buffer[buffer_size - 1] = '\0';
217 WARNING ("mbmon: Message from mbmon has been truncated.");
219 else if (buffer_fill == 0)
221 WARNING ("mbmon: Peer has unexpectedly shut down the socket. "
222 "Buffer: `%s'", buffer);
231 static int mbmon_config (const char *key, const char *value)
233 if (strcasecmp (key, "host") == 0)
235 if (mbmon_host != NULL)
237 mbmon_host = strdup (value);
239 else if (strcasecmp (key, "port") == 0)
241 if (mbmon_port != NULL)
243 mbmon_port = strdup (value);
253 static void mbmon_submit (const char *type, const char *type_instance,
257 value_list_t vl = VALUE_LIST_INIT;
259 values[0].gauge = value;
263 vl.time = time (NULL);
264 strcpy (vl.host, hostname_g);
265 strcpy (vl.plugin, "mbmon");
266 strncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
268 plugin_dispatch_values (type, &vl);
269 } /* void mbmon_submit */
271 /* Trim trailing whitespace from a string. */
272 static void trim_spaces (char *s)
276 for (l = strlen (s) - 1; (l > 0) && isspace (s[l]); l--)
280 static int mbmon_read (void)
285 /* get data from daemon */
286 if (mbmon_query_daemon (buf, sizeof (buf)) < 0)
290 while ((t = strchr (s, ':')) != NULL)
301 value = strtod (t, &nextc);
302 if ((*nextc != '\n') && (*nextc != '\0'))
304 ERROR ("mbmon: value for `%s' contains invalid characters: `%s'", s, t);
308 if (strncmp (s, "TEMP", 4) == 0)
311 type = "temperature";
313 else if (strncmp (s, "FAN", 3) == 0)
318 else if (strncmp (s, "V", 1) == 0)
328 mbmon_submit (type, inst, value);
337 } /* void mbmon_read */
338 #endif /* MBMON_HAVE_READ */
341 Register collectd plugin. */
342 void module_register (modreg_e load)
344 if (load & MR_DATASETS)
346 plugin_register_data_set (&fanspeed_ds);
347 plugin_register_data_set (&temperature_ds);
348 plugin_register_data_set (&voltage_ds);
354 plugin_register_config ("mbmon", mbmon_config, config_keys, config_keys_num);
355 plugin_register_read ("mbmon", mbmon_read);
357 #endif /* MBMON_HAVE_READ */
358 } /* void module_register */