Add NDK API for getprocnetwork
The API is the getter couterpart for setprocnetwork.
Use it in NetworkUtils so that the NDK API can be the source of truth
for the process network.
Bug: 171540887
Test: atest CtsNetTestCases
Tests in change I311b58585033c2ca50ce5477ea9cd94b6f127507
Merged-In: Ie8f68cf1fa57deddb63324c1abf3d6fd5b0ef500
Change-Id: If37c1480e8a6fe22ce0340858fcde052e8770923
diff --git a/native/android/net.c b/native/android/net.c
index a8104fc..d4b8888 100644
--- a/native/android/net.c
+++ b/native/android/net.c
@@ -22,12 +22,13 @@
#include <stdlib.h>
#include <sys/limits.h>
+// This value MUST be kept in sync with the corresponding value in
+// the android.net.Network#getNetworkHandle() implementation.
+static const uint32_t kHandleMagic = 0xcafed00d;
+static const uint32_t kHandleMagicSize = 32;
static int getnetidfromhandle(net_handle_t handle, unsigned *netid) {
static const uint32_t k32BitMask = 0xffffffff;
- // This value MUST be kept in sync with the corresponding value in
- // the android.net.Network#getNetworkHandle() implementation.
- static const uint32_t kHandleMagic = 0xcafed00d;
// Check for minimum acceptable version of the API in the low bits.
if (handle != NETWORK_UNSPECIFIED &&
@@ -41,6 +42,12 @@
return 1;
}
+static net_handle_t gethandlefromnetid(unsigned netid) {
+ if (netid == NETID_UNSET) {
+ return NETWORK_UNSPECIFIED;
+ }
+ return (((net_handle_t) netid) << kHandleMagicSize) | kHandleMagic;
+}
int android_setsocknetwork(net_handle_t network, int fd) {
unsigned netid;
@@ -72,6 +79,17 @@
return rval;
}
+int android_getprocnetwork(net_handle_t *network) {
+ if (network == NULL) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ unsigned netid = getNetworkForProcess();
+ *network = gethandlefromnetid(netid);
+ return 0;
+}
+
int android_getaddrinfofornetwork(net_handle_t network,
const char *node, const char *service,
const struct addrinfo *hints, struct addrinfo **res) {