Break SSL support out of _socket module and place it into a new

helper module _ssl.

The support for the RAND_* APIs in _ssl is now only enabled
for OpenSSL 0.9.5 and up since they were added in that
release.

Note that socketmodule.* should really be renamed to _socket.* --
unfortunately, this seems to lose the CVS history of the file.

Please review and test... I was only able to test the header file
chaos in socketmodule.c/h on Linux. The test run through fine
and compiles don't give errors or warnings.

WARNING: This patch does *not* include changes to the various
non-Unix build process files.

1 files changed, 159 insertions, 0 deletions

diff --git a/Modules/socketmodule.h b/Modules/socketmodule.h
new file mode 100644
index 0000000000..606db3d827
--- /dev/null
+++ b/Modules/socketmodule.h
@@ -0,0 +1,159 @@
+/* Socket module header file */
+
+/* Includes needed for the sockaddr_* symbols below */
+#ifndef MS_WINDOWS
+# include <sys/socket.h>
+# include <netinet/in.h>
+# if !(defined(__BEOS__) || defined(__CYGWIN__) || (defined(PYOS_OS2) && defined(PYCC_VACPP)))
+#  include <netinet/tcp.h>
+# endif
+
+#else /* MS_WINDOWS */
+# include <winsock.h>
+#endif
+
+#ifdef HAVE_SYS_UN_H
+# include <sys/un.h>
+#else
+# undef AF_UNIX
+#endif
+
+#ifdef HAVE_NETPACKET_PACKET_H
+# include <sys/ioctl.h>
+# include <net/if.h>
+# include <netpacket/packet.h>
+#endif
+
+#ifndef Py__SOCKET_H
+#define Py__SOCKET_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Python module and C API name */
+#define PySocket_MODULE_NAME	"_socket"
+#define PySocket_CAPI_NAME	"CAPI"
+
+/* Abstract the socket file descriptor type */
+#ifdef MS_WINDOWS
+typedef SOCKET SOCKET_T;
+#	ifdef MS_WIN64
+#		define SIZEOF_SOCKET_T 8
+#	else
+#		define SIZEOF_SOCKET_T 4
+#	endif
+#else
+typedef int SOCKET_T;
+#	define SIZEOF_SOCKET_T SIZEOF_INT
+#endif
+
+/* The object holding a socket.  It holds some extra information,
+   like the address family, which is used to decode socket address
+   arguments properly. */
+
+typedef struct {
+	PyObject_HEAD
+	SOCKET_T sock_fd;	/* Socket file descriptor */
+	int sock_family;	/* Address family, e.g., AF_INET */
+	int sock_type;		/* Socket type, e.g., SOCK_STREAM */
+	int sock_proto;		/* Protocol type, usually 0 */
+	union sock_addr {
+		struct sockaddr_in in;
+#ifdef AF_UNIX
+		struct sockaddr_un un;
+#endif
+#ifdef ENABLE_IPV6
+		struct sockaddr_in6 in6;
+		struct sockaddr_storage storage;
+#endif
+#ifdef HAVE_NETPACKET_PACKET_H
+		struct sockaddr_ll ll;
+#endif
+	} sock_addr;
+    	PyObject *(*errorhandler)(void); /* Error handler; checks
+					    errno, returns NULL and
+					    sets a Python exception */
+} PySocketSockObject;
+
+/* A forward reference to the Socktype type object.
+   The Socktype variable contains pointers to various functions,
+   some of which call newsockobject(), which uses Socktype, so
+   there has to be a circular reference. */
+
+extern DL_IMPORT(PyTypeObject) PySocketSock_Type;
+
+/* --- C API ----------------------------------------------------*/
+
+/* C API for usage by other Python modules */
+typedef struct {
+	 
+    PyTypeObject *Sock_Type;
+
+} PySocketModule_APIObject;
+    
+#ifndef PySocket_BUILDING_SOCKET
+
+/* --- C API ----------------------------------------------------*/
+
+/* Interfacestructure to C API for other modules.
+   Call PySocket_ImportModuleAPI() to initialize this
+   structure. After that usage is simple:
+
+   if (!PyArg_ParseTuple(args, "O!|zz:ssl",
+                         &PySocketModule.Sock_Type, (PyObject*)&Sock,
+	 		 &key_file, &cert_file))
+ 	 return NULL;
+   ...
+
+*/
+
+static 
+PySocketModule_APIObject PySocketModule;
+
+/* You *must* call this before using any of the functions in
+   PySocketModule and check its outcome; otherwise all accesses will
+   result in a segfault. Returns 0 on success. */
+
+#ifndef DPRINTF
+# define DPRINTF if (0) printf
+#endif
+
+static
+int PySocketModule_ImportModuleAndAPI(void)
+{
+    PyObject *mod = 0, *v = 0;
+    char *apimodule = PySocket_MODULE_NAME;
+    char *apiname = PySocket_CAPI_NAME;
+    void *api;
+    
+    DPRINTF("Importing the %s C API...\n",apimodule);
+    mod = PyImport_ImportModule(apimodule);
+    if (mod == NULL)
+	goto onError;
+    DPRINTF(" %s package found\n",apimodule);
+    v = PyObject_GetAttrString(mod,apiname);
+    if (v == NULL)
+	goto onError;
+    Py_DECREF(mod);
+    DPRINTF(" API object %s found\n",apiname);
+    api = PyCObject_AsVoidPtr(v);
+    if (api == NULL)
+	goto onError;
+    Py_DECREF(v);
+    memcpy(&PySocketModule, api, sizeof(PySocketModule));
+    DPRINTF(" API object loaded and initialized.\n");
+    return 0;
+    
+ onError:
+    DPRINTF(" not found.\n");
+    Py_XDECREF(mod);
+    Py_XDECREF(v);
+    return -1;
+}
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py__SOCKET_H */