summaryrefslogtreecommitdiff
path: root/plugins/mbmon/mbmon-plugin.c
blob: 754b0f6bc11bf08646ab418b493a4e2237d13aab (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
/*
 * Copyright (C) 2010 Daniele Napolitano <dnax88@gmail.com>
 * Copyright (C) 2005-2009 Alex Murray <murray.alex@gmail.com>
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */

#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif

#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif

#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif

#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif

#include <unistd.h>
#include "mbmon-plugin.h"

const gchar *plugin_name = "mbmon";

#define MBMON_SERVER_IP_ADDRESS "127.0.0.1"
#define MBMON_PORT_NUMBER 411
#define MBMON_OUTPUT_BUFFER_LENGTH 1024

enum {
    MBMON_SOCKET_OPEN_ERROR,
    MBMON_SOCKET_CONNECT_ERROR,
    MBMON_GIOCHANNEL_ERROR,
    MBMON_GIOCHANNEL_READ_ERROR
};

static const gchar *mbmon_plugin_query_mbmon_daemon(GError **error) {
    static gboolean first_run = FALSE;
    gint output_length = 0;
    gchar *pc;

    struct sockaddr_in address;
    static char* buffer = NULL;
    static gint64 previous_query_time;
    gint64 current_query_time;

    if (NULL == buffer) {
        /* initialise buffer and current time */
        buffer = g_new0(char, MBMON_OUTPUT_BUFFER_LENGTH);
        previous_query_time = g_get_monotonic_time ();
        first_run = TRUE;
    }
    current_query_time = g_get_monotonic_time ();

    /* only query if more than 2 seconds has elapsed,
    mbmon daemon will send a new value every 2 seconds */
    if (first_run || current_query_time - previous_query_time > 2 * G_TIME_SPAN_SECOND) {
        int sockfd;
        ssize_t n;

        previous_query_time = current_query_time;

        if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
            /* couldn't open socket */
            g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, MBMON_SOCKET_OPEN_ERROR, "Error opening socket for mbmon");
            return NULL;
        }

        address.sin_family = AF_INET;
        address.sin_addr.s_addr = inet_addr(MBMON_SERVER_IP_ADDRESS);
        address.sin_port = htons(MBMON_PORT_NUMBER);

        if (connect(sockfd, (struct sockaddr *)&address, (socklen_t)sizeof(address)) == -1) {
            g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, MBMON_SOCKET_CONNECT_ERROR, "Error connecting to mbmon daemon on port %i on %s", htons(MBMON_PORT_NUMBER), MBMON_SERVER_IP_ADDRESS);
            return NULL;
        }

        pc = buffer;
        while ((n = read(sockfd, pc, MBMON_OUTPUT_BUFFER_LENGTH - output_length)) > 0) {
            output_length += n;
            pc = &pc[n];
        }
        /* always null terminate the end of the buffer
         * regardless of how much stuff is in it already */
        buffer[output_length] = '\0';
        close(sockfd);
    }

    return buffer;
}

static SensorType get_sensor_type (const char *name) {
    SensorType type = CURRENT_SENSOR;

    if (g_strrstr(name, "FAN")) {
        type = FAN_SENSOR;
    } else if (g_strrstr(name, "TEMP")) {
        type = TEMP_SENSOR;
    } else {
        type = VOLTAGE_SENSOR;
    }
    return type;
}

static IconType get_sensor_icon (SensorType type) {
    switch (type) {
        case TEMP_SENSOR:
            return CPU_ICON;
        case FAN_SENSOR:
            return FAN_ICON;
        default:
            return GENERIC_ICON;
    }
}

static void mbmon_plugin_get_sensors(GList **sensors) {

    GError *error = NULL;
    const gchar *mbmon_output;
    gchar **output_vector = NULL, **pv;

    mbmon_output = mbmon_plugin_query_mbmon_daemon(&error);

    if (error) {
        g_error_free(error);
        return;
    }

    pv = output_vector = g_strsplit(mbmon_output, "\n", -1);

    while(pv[0] != NULL) {
        gchar **pv2;

        pv2 = g_strsplit(pv[0], ":", -1);
        gchar *name, *label;
        SensorType type;
        gboolean visible;
        IconType icon;
        gdouble low_value, high_value;

        type = get_sensor_type(pv2[0]);
        icon = get_sensor_icon(type);
        name = g_strstrip(pv2[0]);
        label = NULL;
        visible = (type == TEMP_SENSOR ? TRUE : FALSE);

        if(type == VOLTAGE_SENSOR) {
            if(g_strrstr(name, "VC0")) {
                label = g_strdup("Core Voltage 1");
            } else if(g_strrstr(name, "VC1")) {
                label = g_strdup("Core Voltage 2");
            } else if(g_strrstr(name, "V33")) {
                label = g_strdup("+3.3v Voltage");
            } else if(g_strrstr(name, "V50P")) {
                label = g_strdup("+5v Voltage");
            } else if(g_strrstr(name, "V12P")) {
                label = g_strdup("+12v Voltage");
            } else if(g_strrstr(name, "V12N")) {
                label = g_strdup("-12v Voltage");
            } else if(g_strrstr(name, "V50N")) {
                label = g_strdup("-5v Voltage");
            }
        }

        label = (label == NULL ? name : label);

        sensors_applet_plugin_default_sensor_limits(type, &low_value, &high_value);

        sensors_applet_plugin_add_sensor_with_limits(sensors,
                                                     name,
                                                     name,
                                                     label,
                                                     type,
                                                     visible,
                                                     low_value,
                                                     high_value,
                                                     icon,
                                                     DEFAULT_GRAPH_COLOR);

        g_strfreev(pv2);
        pv++;
    }
    g_strfreev(output_vector);

}

/* to be called to setup for mbmon sensors */
static GList *mbmon_plugin_init(void) {
    GList *sensors = NULL;
    mbmon_plugin_get_sensors(&sensors);
    return sensors;
}


/* returns the value of the sensor_list at the given iter, or if an
   error occurs, instatiates error with an error message */
static gdouble mbmon_plugin_get_sensor_value(const gchar *path,
                                            const gchar *id,
                                            SensorType type,
                                            GError **error) {

    const gchar *mbmon_output;
    gchar **output_vector = NULL, **pv, **pv2;

    gfloat sensor_value = -1.0f;

    mbmon_output = mbmon_plugin_query_mbmon_daemon(error);

    if (*error) {
        return sensor_value;
    }

    pv = output_vector = g_strsplit(mbmon_output, "\n", -1);

    while(pv[0] != NULL) {
        if (g_strrstr(pv[0], path) != NULL) {

            pv2 = g_strsplit(pv[0], ":", -1);
            sensor_value = (gfloat)(g_ascii_strtod(pv2[1], NULL));
            g_strfreev(pv2);
            break;
        }
        pv++;
    }
    g_strfreev(output_vector);

    return (gdouble)sensor_value;
}

const gchar *sensors_applet_plugin_name(void)
{
    return plugin_name;
}

GList *sensors_applet_plugin_init(void)
{
    return mbmon_plugin_init();
}

gdouble sensors_applet_plugin_get_sensor_value(const gchar *path,
                                                const gchar *id,
                                                SensorType type,
                                                GError **error) {

    return mbmon_plugin_get_sensor_value(path, id, type, error);
}