diff options
Diffstat (limited to 'winsup/cygwin/fhandler_socket.cc')
| -rw-r--r-- | winsup/cygwin/fhandler_socket.cc | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/winsup/cygwin/fhandler_socket.cc b/winsup/cygwin/fhandler_socket.cc index f4428639a..eb6f36a2e 100644 --- a/winsup/cygwin/fhandler_socket.cc +++ b/winsup/cygwin/fhandler_socket.cc @@ -28,6 +28,10 @@ #include "sigproc.h" #define SECRET_EVENT_NAME "cygwin.local_socket.secret.%d.%08x-%08x-%08x-%08x" +#define ENTROPY_SOURCE_NAME "/dev/urandom" +#define ENTROPY_SOURCE_DEV_UNIT 9 + +fhandler_dev_random* entropy_source = NULL; /**********************************************************************/ /* fhandler_socket */ @@ -50,8 +54,22 @@ fhandler_socket::~fhandler_socket () void fhandler_socket::set_connect_secret () { - for (int i = 0; i < 4; i++) - connect_secret [i] = random (); + if (!entropy_source) + { + void *buf = malloc (sizeof (fhandler_dev_random)); + entropy_source = new (buf) fhandler_dev_random (ENTROPY_SOURCE_NAME, + ENTROPY_SOURCE_DEV_UNIT); + } + if (entropy_source && + !entropy_source->open (ENTROPY_SOURCE_NAME, O_RDONLY)) + { + delete entropy_source; + entropy_source = NULL; + } + if (!entropy_source || + (entropy_source->read (connect_secret, sizeof (connect_secret)) != + sizeof (connect_secret))) + bzero ((char*) connect_secret, sizeof (connect_secret)); } void |