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#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <prop/proplib.h>
#include <sys/envsys.h>
#include "apm.h"
#include "envsys.h"
#define _DEV_SYSMON "/dev/sysmon"
int
envsys_supported (void)
{
return 1; /* XXX */
}
prop_array_t
get_device (const char * name)
{
prop_dictionary_t sys_dict;
prop_array_t array;
int smfd;
if (name == NULL)
return NULL;
smfd = open (_DEV_SYSMON, O_RDONLY);
if (smfd == -1)
return NULL;
if (prop_dictionary_recv_ioctl (smfd,
ENVSYS_GETDICTIONARY,
&sys_dict) != 0)
{
return NULL;
}
close (smfd);
array = prop_dictionary_get (sys_dict, name);
if (array == NULL)
return NULL;
prop_object_retain (array);
prop_object_release (sys_dict);
return array;
}
bool
stat_is_valid (prop_dictionary_t stat)
{
prop_string_t strval;
if (stat == NULL)
return false;
strval = prop_dictionary_get (stat, "state");
if (strval == NULL)
return false;
return prop_string_equals_cstring (strval, "valid");
}
int64_t
handle_stat (prop_dictionary_t stat,
const char * key)
{
prop_number_t numval;
if (stat == NULL || key == NULL)
return -1;
numval = (prop_number_t) prop_dictionary_get (stat, key);
if (numval == NULL)
return -1;
return prop_number_integer_value (numval);
}
int
envsys_read (int battery,
apm_info *info)
{
prop_object_iterator_t iter;
prop_dictionary_t id;
prop_string_t desc;
prop_array_t bat_info, ac_info;
bool is_present = false;
int64_t charge_rate = 0,
max_charge = 0,
cur_charge = 0,
warn_charge = 0,
crit_charge = 0;
char dev_name[32];
int bat_id = battery - 1;
if (info == NULL || (battery - 1 < 0))
return -1;
info->battery_flags = 0;
info->using_minutes = 1;
snprintf (dev_name, sizeof (dev_name), "acpibat%d", bat_id);
bat_info = get_device (dev_name);
if (bat_info == NULL)
return -1;
ac_info = get_device ("acpiacad0");
if (ac_info != NULL) {
iter = prop_array_iterator (ac_info);
while ((id = (prop_dictionary_t) prop_object_iterator_next (iter)) != NULL)
{
desc = (prop_string_t) prop_dictionary_get (id, "description");
if (desc == NULL) continue;
if (!prop_string_equals_cstring (desc, "connected"))
continue;
if (handle_stat (id, "cur-value") != 0) {
info->ac_line_status = AC_LINE_STATUS_ON;
} else {
info->ac_line_status = AC_LINE_STATUS_OFF;
}
break;
}
prop_object_iterator_release (iter);
prop_object_release (ac_info);
} else {
info->ac_line_status = AC_LINE_STATUS_UNKNOWN;
}
iter = prop_array_iterator (bat_info);
while ((id = (prop_dictionary_t) prop_object_iterator_next (iter)) != NULL)
{
desc = (prop_string_t) prop_dictionary_get (id, "description");
if (desc == NULL) continue;
if (prop_string_equals_cstring (desc, "charge")) {
cur_charge = handle_stat (id, "cur-value");
max_charge = handle_stat (id, "max-value");
warn_charge = handle_stat (id, "warning-capacity");
crit_charge = handle_stat (id, "critical-capacity");
} else if (prop_string_equals_cstring (desc, "charge rate")) {
if (stat_is_valid (id)) charge_rate = handle_stat (id, "cur-value");
} else if (prop_string_equals_cstring (desc, "discharge rate")) {
if (stat_is_valid (id)) charge_rate = handle_stat (id, "cur-value");
} else if (prop_string_equals_cstring (desc, "present")) {
is_present = (handle_stat (id, "cur-value") == 1);
}
}
prop_object_iterator_release (iter);
prop_object_release (bat_info);
if (max_charge > 1) {
info->battery_percentage = ( cur_charge * 100 ) / max_charge;
if (info->battery_percentage > 100) info->battery_percentage = 100;
} else {
info->battery_percentage = BATTERY_PERCENTAGE_UNKNOWN;
}
if (info->ac_line_status) {
info->battery_status = BATTERY_STATUS_CHARGING;
/*
* If our charge rate is 0, then it was either marked invalid by envsys
* or we're "charging" at 0Wh-- either way, the battery isn't charging
*/
if (charge_rate > 0) {
info->battery_flags = info->battery_flags | BATTERY_FLAGS_CHARGING;
}
} else {
if (cur_charge < crit_charge) {
info->battery_status = BATTERY_STATUS_CRITICAL;
} else if (cur_charge < warn_charge) {
info->battery_status = BATTERY_STATUS_LOW;
} else {
info->battery_status = BATTERY_STATUS_HIGH;
}
}
if (!is_present) {
info->battery_percentage = 0;
info->battery_time = 0;
info->battery_status = BATTERY_STATUS_ABSENT;
}
/* calculate time remaining */
if (charge_rate == 0) {
info->battery_time = BATTERY_TIME_UNKNOWN;
} else {
info->battery_time = ( (max_charge - cur_charge) * 60) / charge_rate;
}
return 0;
}
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