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Pass length of result structure into setipaddr. Fixes bug #565747.

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Committed to 2.2 branch.
This commit is contained in:
Martin v. Löwis 2002-07-28 16:10:31 +00:00
parent 2026584016
commit ddc6f4748e
1 changed files with 12 additions and 8 deletions
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20
Modules/socketmodule.c
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@ -586,7 +586,7 @@ PyThread_type_lock gethostbyname_lock;
an error occurred; then an exception is raised. */ an error occurred; then an exception is raised. */
static int static int
setipaddr(char *name, struct sockaddr *addr_ret, int af) setipaddr(char *name, struct sockaddr *addr_ret, size_t addr_ret_size, int af)
{ {
struct addrinfo hints, *res; struct addrinfo hints, *res;
int error; int error;
@ -624,7 +624,9 @@ setipaddr(char *name, struct sockaddr *addr_ret, int af)
"wildcard resolved to multiple address"); "wildcard resolved to multiple address");
return -1; return -1;
} }
memcpy(addr_ret, res->ai_addr, res->ai_addrlen); if (res->ai_addrlen < addr_ret_size)
addr_ret_size = res->ai_addrlen;
memcpy(addr_ret, res->ai_addr, addr_ret_size);
freeaddrinfo(res); freeaddrinfo(res);
return siz; return siz;
} }
@ -659,7 +661,9 @@ setipaddr(char *name, struct sockaddr *addr_ret, int af)
set_gaierror(error); set_gaierror(error);
return -1; return -1;
} }
memcpy((char *) addr_ret, res->ai_addr, res->ai_addrlen); if (res->ai_addrlen < addr_ret_size)
addr_ret_size = res->ai_addrlen;
memcpy((char *) addr_ret, res->ai_addr, addr_ret_size);
freeaddrinfo(res); freeaddrinfo(res);
switch (addr_ret->sa_family) { switch (addr_ret->sa_family) {
case AF_INET: case AF_INET:
@ -843,7 +847,7 @@ getsockaddrarg(PySocketSockObject *s, PyObject *args,
} }
if (!PyArg_ParseTuple(args, "si:getsockaddrarg", &host, &port)) if (!PyArg_ParseTuple(args, "si:getsockaddrarg", &host, &port))
return 0; return 0;
if (setipaddr(host, (struct sockaddr *)addr, AF_INET) < 0) if (setipaddr(host, (struct sockaddr *)addr, sizeof(*addr), AF_INET) < 0)
return 0; return 0;
addr->sin_family = AF_INET; addr->sin_family = AF_INET;
addr->sin_port = htons((short)port); addr->sin_port = htons((short)port);
@ -864,7 +868,7 @@ getsockaddrarg(PySocketSockObject *s, PyObject *args,
&scope_id)) { &scope_id)) {
return 0; return 0;
} }
if (setipaddr(host, (struct sockaddr *)addr, AF_INET6) < 0) if (setipaddr(host, (struct sockaddr *)addr, sizeof(*addr), AF_INET6) < 0)
return 0; return 0;
addr->sin6_family = s->sock_family; addr->sin6_family = s->sock_family;
addr->sin6_port = htons((short)port); addr->sin6_port = htons((short)port);
@ -2046,7 +2050,7 @@ socket_gethostbyname(PyObject *self, PyObject *args)
if (!PyArg_ParseTuple(args, "s:gethostbyname", &name)) if (!PyArg_ParseTuple(args, "s:gethostbyname", &name))
return NULL; return NULL;
if (setipaddr(name, (struct sockaddr *)&addrbuf, AF_INET) < 0) if (setipaddr(name, (struct sockaddr *)&addrbuf, sizeof(addrbuf), AF_INET) < 0)
return NULL; return NULL;
return makeipaddr((struct sockaddr *)&addrbuf, return makeipaddr((struct sockaddr *)&addrbuf,
sizeof(struct sockaddr_in)); sizeof(struct sockaddr_in));
@ -2219,7 +2223,7 @@ socket_gethostbyname_ex(PyObject *self, PyObject *args)
if (!PyArg_ParseTuple(args, "s:gethostbyname_ex", &name)) if (!PyArg_ParseTuple(args, "s:gethostbyname_ex", &name))
return NULL; return NULL;
if (setipaddr(name, (struct sockaddr *)&addr, PF_INET) < 0) if (setipaddr(name, (struct sockaddr *)&addr, sizeof(addr), PF_INET) < 0)
return NULL; return NULL;
Py_BEGIN_ALLOW_THREADS Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_GETHOSTBYNAME_R #ifdef HAVE_GETHOSTBYNAME_R
@ -2295,7 +2299,7 @@ socket_gethostbyaddr(PyObject *self, PyObject *args)
if (!PyArg_ParseTuple(args, "s:gethostbyaddr", &ip_num)) if (!PyArg_ParseTuple(args, "s:gethostbyaddr", &ip_num))
return NULL; return NULL;
af = PF_UNSPEC; af = PF_UNSPEC;
if (setipaddr(ip_num, sa, af) < 0) if (setipaddr(ip_num, sa, sizeof(addr), af) < 0)
return NULL; return NULL;
af = sa->sa_family; af = sa->sa_family;
ap = NULL; ap = NULL;