Patch by Ben Gertzfield to add inet_aton() and inet_ntoa() calls.

This commit is contained in:
Guido van Rossum 1999-08-20 18:21:51 +00:00
parent abf8a1daa8
commit 5c9eb21729
1 changed files with 72 additions and 0 deletions

View File

@ -54,6 +54,8 @@ Module interface:
- socket.htons(16 bit value) --> new int object
- socket.htonl(32 bit value) --> new int object
- socket.AF_INET, socket.SOCK_STREAM, etc.: constants from <socket.h>
- socket.inet_aton(IP address) -> 32-bit packed IP representation
- socket.inet_ntoa(packed IP) -> IP address string
- an Internet socket address is a pair (hostname, port)
where hostname can be anything recognized by gethostbyname()
(including the dd.dd.dd.dd notation) and port is in host byte order
@ -151,6 +153,10 @@ int shutdown( int, int );
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
/* added 20 Aug 1999 to remove warnings from inet_ntoa call <che@debian.org> */
#include <arpa/inet.h>
#include <fcntl.h>
#else
#include <winsock.h>
@ -1785,6 +1791,68 @@ static char htonl_doc[] =
\n\
Convert a 32-bit integer from host to network byte order.";
/*
* socket.inet_aton() and socket.inet_ntoa() functions
*
* written 20 Aug 1999 by Ben Gertzfield <che@debian.org> <- blame him!
*
*/
static char inet_aton_doc[] =
"inet_aton(string) -> packed 32-bit IP representation\n\
\n\
Convert an IP address in string format (123.45.67.89) to the 32-bit packed
binary format used in low-level network functions.";
static PyObject*
BUILD_FUNC_DEF_2(PySocket_inet_aton, PyObject *, self, PyObject *, args)
{
char *ip_addr;
struct in_addr packed_addr;
int err;
if (!PyArg_Parse(args, "s", &ip_addr)) {
return NULL;
}
err = inet_aton(ip_addr, &packed_addr);
if (err == 0) { /* invalid address */
PyErr_SetString(PySocket_Error,
"illegal IP address string passed to inet_aton");
return NULL;
}
return PyString_FromStringAndSize((char *) &packed_addr,
sizeof(packed_addr));
}
static char inet_ntoa_doc[] =
"inet_aton(packed_ip) -> ip_address_string\n\
\n\
Convert an IP address from 32-bit packed binary format to string format";
static PyObject*
BUILD_FUNC_DEF_2(PySocket_inet_ntoa, PyObject *, self, PyObject *, args)
{
char *packed_str;
int err, addr_len;
struct in_addr packed_addr;
if (!PyArg_Parse(args, "s#", &packed_str, &addr_len)) {
return NULL;
}
if (addr_len != sizeof(packed_addr)) {
PyErr_SetString(PySocket_Error,
"packed IP wrong length for inet_ntoa");
return NULL;
}
memcpy(&packed_addr, packed_str, addr_len);
return PyString_FromString(inet_ntoa(packed_addr));
}
/* List of functions exported by this module. */
@ -1803,6 +1871,8 @@ static PyMethodDef PySocket_methods[] = {
{"ntohl", PySocket_ntohl, 0, ntohl_doc},
{"htons", PySocket_htons, 0, htons_doc},
{"htonl", PySocket_htonl, 0, htonl_doc},
{"inet_aton", PySocket_inet_aton, 0, inet_aton_doc},
{"inet_ntoa", PySocket_inet_ntoa, 0, inet_ntoa_doc},
{NULL, NULL} /* Sentinel */
};
@ -1927,6 +1997,8 @@ getservbyname() -- map a service name and a protocol name to a port number\n\
getprotobyname() -- mape a protocol name (e.g. 'tcp') to a number\n\
ntohs(), ntohl() -- convert 16, 32 bit int from network to host byte order\n\
htons(), htonl() -- convert 16, 32 bit int from host to network byte order\n\
inet_aton() -- convert IP addr string (123.45.67.89) to 32-bit packed format\n\
inet_ntoa() -- convert 32-bit packed format IP to string (123.45.67.89)\n\
\n\
(*) not available on all platforms!)\n\
\n\