Support adb client connect to remote server

ADB client: allow user to specify hostname and port number of remote
adb server.
ADB server: bind server to all network interfaces instead of just
localhost when user gives -a flag.

Primary use-case for this change is to support remote testing of USB
devices. HostA is running some test automation software which invokes adb
client. HostB has USB-only device attached and is running adb server. adb
client on HostA makes connection to adb server on HostB to talk to the
USB device.

Change-Id: I845cc8c00350b400317f8c18f813e6fd79bd5470
Signed-off-by: Dean Kwon <daex.i.kwon@intel.com>
Signed-off-by: Jim Bride <jim.bride@intel.com>
Signed-off-by: Matt Gumbel <matthew.k.gumbel@intel.com>
diff --git a/adb/adb.c b/adb/adb.c
index b3283de..4c3364f 100644
--- a/adb/adb.c
+++ b/adb/adb.c
@@ -46,6 +46,7 @@
 #endif
 
 int HOST = 0;
+int gListenAll = 0;
 
 static int auth_enabled = 0;
 
@@ -701,7 +702,13 @@
     if(!strncmp("tcp:", name, 4)){
         int  ret;
         port = atoi(name + 4);
-        ret = socket_loopback_server(port, SOCK_STREAM);
+
+        if (gListenAll > 0) {
+            ret = socket_inaddr_any_server(port, SOCK_STREAM);
+        } else {
+            ret = socket_loopback_server(port, SOCK_STREAM);
+        }
+
         return ret;
     }
 #ifndef HAVE_WIN32_IPC  /* no Unix-domain sockets on Win32 */
@@ -1079,8 +1086,10 @@
         dup2(fd[1], STDERR_FILENO);
         adb_close(fd[1]);
 
+        char str_port[30];
+        snprintf(str_port, sizeof(str_port), "%d",  server_port);
         // child process
-        int result = execl(path, "adb", "fork-server", "server", NULL);
+        int result = execl(path, "adb", "-P", str_port, "fork-server", "server", NULL);
         // this should not return
         fprintf(stderr, "OOPS! execl returned %d, errno: %d\n", result, errno);
     } else  {