add hg and python

1 files changed, 252 insertions, 0 deletions

diff --git a/sys/src/cmd/python/Modules/socketmodule.h b/sys/src/cmd/python/Modules/socketmodule.h
new file mode 100644
index 000000000..84f2422f4
--- /dev/null
+++ b/sys/src/cmd/python/Modules/socketmodule.h
@@ -0,0 +1,252 @@
+/* Socket module header file */
+
+/* Includes needed for the sockaddr_* symbols below */
+#ifndef MS_WINDOWS
+#ifdef __VMS
+#   include <socket.h>
+# else
+#   include <sys/socket.h>
+# endif
+# include <netinet/in.h>
+# if !(defined(__BEOS__) || defined(__CYGWIN__) || (defined(PYOS_OS2) && defined(PYCC_VACPP)))
+#  include <netinet/tcp.h>
+# endif
+
+#else /* MS_WINDOWS */
+#if _MSC_VER >= 1300
+# include <winsock2.h>
+# include <ws2tcpip.h>
+# define HAVE_ADDRINFO
+# define HAVE_SOCKADDR_STORAGE
+# define HAVE_GETADDRINFO
+# define HAVE_GETNAMEINFO
+# define ENABLE_IPV6
+#else
+# include <winsock.h>
+#endif
+#endif
+
+#ifdef HAVE_SYS_UN_H
+# include <sys/un.h>
+#else
+# undef AF_UNIX
+#endif
+
+#ifdef HAVE_LINUX_NETLINK_H
+# ifdef HAVE_ASM_TYPES_H
+#  include <asm/types.h>
+# endif
+# include <linux/netlink.h>
+#else
+#  undef AF_NETLINK
+#endif
+
+#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/rfcomm.h>
+#include <bluetooth/l2cap.h>
+#include <bluetooth/sco.h>
+#endif
+
+#ifdef HAVE_BLUETOOTH_H
+#include <bluetooth.h>
+#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
+
+/* Socket address */
+typedef union sock_addr {
+	struct sockaddr_in in;
+#ifdef AF_UNIX
+	struct sockaddr_un un;
+#endif
+#ifdef AF_NETLINK
+	struct sockaddr_nl nl;
+#endif
+#ifdef ENABLE_IPV6
+	struct sockaddr_in6 in6;
+	struct sockaddr_storage storage;
+#endif
+#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
+	struct sockaddr_l2 bt_l2;
+	struct sockaddr_rc bt_rc;
+	struct sockaddr_sco bt_sco;
+#endif
+#ifdef HAVE_NETPACKET_PACKET_H
+	struct sockaddr_ll ll;
+#endif
+} sock_addr_t;
+
+/* 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 */
+	PyObject *(*errorhandler)(void); /* Error handler; checks
+					    errno, returns NULL and
+					    sets a Python exception */
+	double sock_timeout;		 /* Operation timeout in seconds;
+					    0.0 means non-blocking */
+} PySocketSockObject;
+
+/* --- C API ----------------------------------------------------*/
+
+/* Short explanation of what this C API export mechanism does
+   and how it works:
+
+    The _ssl module needs access to the type object defined in 
+    the _socket module. Since cross-DLL linking introduces a lot of
+    problems on many platforms, the "trick" is to wrap the
+    C API of a module in a struct which then gets exported to
+    other modules via a PyCObject.
+
+    The code in socketmodule.c defines this struct (which currently
+    only contains the type object reference, but could very
+    well also include other C APIs needed by other modules)
+    and exports it as PyCObject via the module dictionary
+    under the name "CAPI".
+
+    Other modules can now include the socketmodule.h file
+    which defines the needed C APIs to import and set up
+    a static copy of this struct in the importing module.
+
+    After initialization, the importing module can then
+    access the C APIs from the _socket module by simply
+    referring to the static struct, e.g.
+
+    Load _socket module and its C API; this sets up the global
+    PySocketModule:
+    
+	if (PySocketModule_ImportModuleAndAPI())
+	    return;
+
+
+    Now use the C API as if it were defined in the using
+    module:
+
+        if (!PyArg_ParseTuple(args, "O!|zz:ssl",
+
+			      PySocketModule.Sock_Type,
+
+			      (PyObject*)&Sock,
+			      &key_file, &cert_file))
+	    return NULL;
+
+    Support could easily be extended to export more C APIs/symbols
+    this way. Currently, only the type object is exported, 
+    other candidates would be socket constructors and socket
+    access functions.
+
+*/
+
+/* C API for usage by other Python modules */
+typedef struct {
+	PyTypeObject *Sock_Type;
+        PyObject *error;
+} PySocketModule_APIObject;
+
+/* XXX The net effect of the following appears to be to define a function
+   XXX named PySocketModule_APIObject in _ssl.c.  It's unclear why it isn't
+   XXX defined there directly. 
+
+   >>> It's defined here because other modules might also want to use
+   >>> the C API.
+
+*/
+#ifndef PySocket_BUILDING_SOCKET
+
+/* --- C API ----------------------------------------------------*/
+
+/* Interfacestructure to C API for other modules.
+   Call PySocketModule_ImportModuleAndAPI() 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 /* !PySocket_BUILDING_SOCKET */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py__SOCKET_H */