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/* getprop.c - Get an Android system property
*
* Copyright 2015 The Android Open Source Project
USE_GETPROP(NEWTOY(getprop, ">2", TOYFLAG_USR|TOYFLAG_SBIN))
config GETPROP
bool "getprop"
default y
help
usage: getprop [NAME [DEFAULT]]
Gets an Android system property, or lists them all.
*/
#define FOR_getprop
#include "toys.h"
#if defined(__ANDROID__)
#include <cutils/properties.h>
GLOBALS(
size_t size;
size_t capacity;
)
struct property_info {
char *name;
char *value;
};
static struct property_info **properties;
static void add_property(const char *name, const char *value, void *unused)
{
struct property_info *new = xmalloc(sizeof(struct property_info));
if (TT.size >= TT.capacity) {
TT.capacity += 32;
properties = xrealloc(properties,
TT.capacity * sizeof(struct property_info *));
}
// TODO: fix xstrdup signature so we can remove these bogus casts.
new->name = xstrdup((char *) name);
new->value = xstrdup((char *) value);
properties[TT.size++] = new;
}
static void free_properties()
{
size_t i;
for (i = 0; i < TT.size; ++i) {
free(properties[i]->name);
free(properties[i]->value);
free(properties[i]);
}
free(properties);
}
static int property_cmp(const void *a, const void *b)
{
struct property_info *pa = *((struct property_info **)a);
struct property_info *pb = *((struct property_info **)b);
return strcmp(pa->name, pb->name);
}
void getprop_main(void)
{
if (*toys.optargs) {
char value[PROPERTY_VALUE_MAX];
const char *default_value = "";
if (toys.optargs[1]) default_value = toys.optargs[1];
property_get(*toys.optargs, value, default_value);
puts(value);
} else {
size_t i;
if (property_list(add_property, NULL))
error_exit("property_list failed");
qsort(properties, TT.size, sizeof(struct property_info *), property_cmp);
for (i = 0; i < TT.size; ++i)
printf("[%s]: [%s]\n", properties[i]->name, properties[i]->value);
if (CFG_TOYBOX_FREE) free_properties();
}
}
#else
void getprop_main(void)
{
}
#endif
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