Add minTargetSdkVersion input selector to seapp_contexts

am: f54b3622

Change-Id: I0a304ed2b5591e58b0e39b37cb9fb8f392fe663b

private/seapp_contexts

@@ -7,6 +7,7 @@
 #       name (string)
 #       path (string)
 #       isPrivApp (boolean)
+#       minTargetSdkVersion (unsigned integer)
 # isSystemServer=true can only be used once.
 # An unspecified isSystemServer defaults to false.
 # isEphemeralApp=true will match apps marked by PackageManager as Ephemeral
@@ -19,6 +20,9 @@
 # user=_isolated will match any isolated service UID.
 # isPrivApp=true will only match for applications preinstalled in
 #       /system/priv-app.
+# minTargetSdkVersion will match applications with a targetSdkVersion
+#       greater than or equal to the specified value. If unspecified,
+#       it has a default value of 0.
 # All specified input selectors in an entry must match (i.e. logical AND).
 # Matching is case-insensitive.
 #
@@ -34,6 +38,8 @@
 #       (8) Specified name= string before unspecified name= string.
 #       (9) Specified path= string before unspecified path= string.
 #       (10) Specified isPrivApp= before unspecified isPrivApp= boolean.
+#       (11) Higher value of minTargetSdkVersion= before lower value of minTargetSdkVersion=
+#              integer. Note that minTargetSdkVersion= defaults to 0 if unspecified.
 #
 # Outputs:
 #       domain (string)

tools/check_seapp.c

@@ -194,6 +194,7 @@ static bool validate_bool(char *value, char **errmsg);
 static bool validate_levelFrom(char *value, char **errmsg);
 static bool validate_selinux_type(char *value, char **errmsg);
 static bool validate_selinux_level(char *value, char **errmsg);
+static bool validate_uint(char *value, char **errmsg);
 
 /**
  * The heart of the mapping process, this must be updated if a new key value pair is added
@@ -209,6 +210,7 @@ key_map rules[] = {
                 { .name = "name",           .dir = dir_in,                              },
                 { .name = "path",           .dir = dir_in,                              },
                 { .name = "isPrivApp",      .dir = dir_in, .fn_validate = validate_bool },
+                { .name = "minTargetSdkVersion", .dir = dir_in, .fn_validate = validate_uint },
                 /*Outputs*/
                 { .name = "domain",         .dir = dir_out, .fn_validate = validate_selinux_type  },
                 { .name = "type",           .dir = dir_out, .fn_validate = validate_selinux_type  },
@@ -417,6 +419,19 @@ static bool validate_selinux_level(char *value, char **errmsg) {
 	return true;
 }
 
+static bool validate_uint(char *value, char **errmsg) {
+
+	char *endptr;
+	long longvalue;
+	longvalue = strtol(value, &endptr, 10);
+	if (('\0' != *endptr) || (longvalue < 0) || (longvalue > INT32_MAX)) {
+		*errmsg = "Expecting a valid unsigned integer";
+		return false;
+	}
+
+	return true;
+}
+
 /**
  * Validates a key_map against a set of enforcement rules, this
  * function exits the application on a type that cannot be properly