Android getprop and setprop from Elliott Hughes.

1 files changed, 98 insertions, 0 deletions

diff --git a/toys/android/getprop.c b/toys/android/getprop.c
new file mode 100644
index 00000000..66530419
--- /dev/null
+++ b/toys/android/getprop.c
@@ -0,0 +1,98 @@
+/* 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