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#include "poweradapter.h"
#include "common/io.h"
#include "common/strutil.h"
#include <dirent.h>
#include <unistd.h>
#include <fcntl.h>
static void parsePowerAdapter(int dfd, const char* id, FFlist* results) {
FF_STRBUF_AUTO_DESTROY tmpBuffer = ffStrbufCreate();
{
char present = '\0';
if (ffReadFileDataRelative(dfd, "present", 1, &present) && present == '0') {
return;
}
}
// type must exist and be "Mains"
if (ffReadFileBufferRelative(dfd, "type", &tmpBuffer)) {
ffStrbufTrimRightSpace(&tmpBuffer);
}
if (!ffStrbufEqualS(&tmpBuffer, "Mains")) {
return;
}
// scope may not exist or must not be "Device" (?)
if (ffReadFileBufferRelative(dfd, "scope", &tmpBuffer)) {
ffStrbufTrimRightSpace(&tmpBuffer);
if (ffStrbufEqualS(&tmpBuffer, "Device")) {
return;
}
}
char online = '\0';
ffReadFileDataRelative(dfd, "online", sizeof(online), &online);
if (online != '1') {
return;
}
// input_power_limit must exist and be not empty
if (!ffReadFileBufferRelative(dfd, "input_power_limit", &tmpBuffer) || tmpBuffer.length == 0) {
return;
}
FFPowerAdapterResult* result = FF_LIST_ADD(FFPowerAdapterResult, *results);
ffStrbufInit(&result->name);
ffStrbufInit(&result->description);
result->watts = (int) (ffStrbufToDouble(&tmpBuffer, 0) / 1e6 + 0.5);
ffStrbufInit(&result->manufacturer);
ffStrbufInit(&result->modelName);
ffStrbufInit(&result->serial);
if (ffReadFileBufferRelative(dfd, "manufacturer", &result->manufacturer)) {
ffStrbufTrimRightSpace(&result->manufacturer);
} else if (ffStrEquals(id, "macsmc-ac")) { // asahi
ffStrbufSetStatic(&result->manufacturer, "Apple Inc.");
}
if (ffReadFileBufferRelative(dfd, "model_name", &result->modelName)) {
ffStrbufTrimRightSpace(&result->modelName);
}
if (ffReadFileBufferRelative(dfd, "serial_number", &result->serial)) {
ffStrbufTrimRightSpace(&result->serial);
}
}
const char* ffDetectPowerAdapter(FFlist* results) {
FF_AUTO_CLOSE_DIR DIR* dirp = opendir("/sys/class/power_supply/");
if (dirp == NULL) {
return "opendir(\"/sys/class/power_supply/\") == NULL";
}
struct dirent* entry;
while ((entry = readdir(dirp)) != NULL) {
if (entry->d_name[0] == '.') {
continue;
}
FF_AUTO_CLOSE_FD int dfd = openat(dirfd(dirp), entry->d_name, O_RDONLY | O_CLOEXEC);
if (dfd > 0) {
parsePowerAdapter(dfd, entry->d_name, results);
}
}
return NULL;
}
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