new files
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@7469 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Assar Westerlund
57
lib/roken/freeaddrinfo.c
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57
lib/roken/freeaddrinfo.c
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@@ -0,0 +1,57 @@
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/*
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||||||
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* Copyright (c) 1999 Kungliga Tekniska H<>gskolan
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||||||
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* (Royal Institute of Technology, Stockholm, Sweden).
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||||||
|
* All rights reserved.
|
||||||
|
*
|
||||||
|
* Redistribution and use in source and binary forms, with or without
|
||||||
|
* modification, are permitted provided that the following conditions
|
||||||
|
* are met:
|
||||||
|
*
|
||||||
|
* 1. Redistributions of source code must retain the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer.
|
||||||
|
*
|
||||||
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer in the
|
||||||
|
* documentation and/or other materials provided with the distribution.
|
||||||
|
*
|
||||||
|
* 3. All advertising materials mentioning features or use of this software
|
||||||
|
* must display the following acknowledgement:
|
||||||
|
* This product includes software developed by the Kungliga Tekniska
|
||||||
|
* H<>gskolan and its contributors.
|
||||||
|
*
|
||||||
|
* 4. Neither the name of the Institute nor the names of its contributors
|
||||||
|
* may be used to endorse or promote products derived from this software
|
||||||
|
* without specific prior written permission.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||||
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||||
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||||
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||||
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||||
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||||
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||||
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||||
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||||
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||||
|
* SUCH DAMAGE.
|
||||||
|
*/
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||||||
|
|
||||||
|
#ifdef HAVE_CONFIG_H
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||||||
|
#include <config.h>
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||||||
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RCSID("$Id$");
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||||||
|
#endif
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||||||
|
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||||||
|
#include "roken.h"
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|
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||||||
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/*
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||||||
|
* free the list of `struct addrinfo' starting at `ai'
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||||||
|
*/
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||||||
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||||||
|
void
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|
freeaddrinfo(struct addrinfo *ai)
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|
{
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||||||
|
for (; ai != NULL; ai = ai->ai_next) {
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|
free (ai->ai_canonname);
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|
free (ai->ai_addr);
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|
}
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||||||
|
}
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78
lib/roken/gai_strerror.c
Normal file
78
lib/roken/gai_strerror.c
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@@ -0,0 +1,78 @@
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|||||||
|
/*
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||||||
|
* Copyright (c) 1999 Kungliga Tekniska H<>gskolan
|
||||||
|
* (Royal Institute of Technology, Stockholm, Sweden).
|
||||||
|
* All rights reserved.
|
||||||
|
*
|
||||||
|
* Redistribution and use in source and binary forms, with or without
|
||||||
|
* modification, are permitted provided that the following conditions
|
||||||
|
* are met:
|
||||||
|
*
|
||||||
|
* 1. Redistributions of source code must retain the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer.
|
||||||
|
*
|
||||||
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer in the
|
||||||
|
* documentation and/or other materials provided with the distribution.
|
||||||
|
*
|
||||||
|
* 3. All advertising materials mentioning features or use of this software
|
||||||
|
* must display the following acknowledgement:
|
||||||
|
* This product includes software developed by the Kungliga Tekniska
|
||||||
|
* H<>gskolan and its contributors.
|
||||||
|
*
|
||||||
|
* 4. Neither the name of the Institute nor the names of its contributors
|
||||||
|
* may be used to endorse or promote products derived from this software
|
||||||
|
* without specific prior written permission.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||||
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||||
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||||
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||||
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||||
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||||
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||||
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||||
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||||
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||||
|
* SUCH DAMAGE.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifdef HAVE_CONFIG_H
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||||||
|
#include <config.h>
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||||||
|
RCSID("$Id$");
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||||||
|
#endif
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||||||
|
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||||||
|
#include "roken.h"
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|
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||||||
|
static struct gai_error {
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||||||
|
int code;
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|
char *str;
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||||||
|
} errors[] = {
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||||||
|
{EAI_NOERROR, "no error"},
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||||||
|
{EAI_ADDRFAMILY, "address family for nodename not supported"},
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||||||
|
{EAI_AGAIN, "temporary failure in name resolution"},
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||||||
|
{EAI_BADFLAGS, "invalid value for ai_flags"},
|
||||||
|
{EAI_FAIL, "non-recoverable failure in name resolution"},
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||||||
|
{EAI_FAMILY, "ai_family not supported"},
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||||||
|
{EAI_MEMORY, "memory allocation failure"},
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||||||
|
{EAI_NODATA, "no address associated with nodename"},
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||||||
|
{EAI_NONAME, "nodename nor servname provided, or not known"},
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||||||
|
{EAI_SERVICE, "servname not supported for ai_socktype"},
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||||||
|
{EAI_SOCKTYPE, "ai_socktype not supported"},
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||||||
|
{EAI_SYSTEM, "system error returned in errno"},
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||||||
|
{0, NULL},
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||||||
|
};
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||||||
|
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||||||
|
/*
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||||||
|
*
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||||||
|
*/
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||||||
|
|
||||||
|
char *
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||||||
|
gai_strerror(int ecode)
|
||||||
|
{
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||||||
|
struct gai_error *g;
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||||||
|
|
||||||
|
for (g = errors; g->str != NULL; ++g)
|
||||||
|
if (g->code == ecode)
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||||||
|
return g->str;
|
||||||
|
return "unknown error code in gai_strerror";
|
||||||
|
}
|
||||||
387
lib/roken/getaddrinfo.c
Normal file
387
lib/roken/getaddrinfo.c
Normal file
@@ -0,0 +1,387 @@
|
|||||||
|
/*
|
||||||
|
* Copyright (c) 1999 Kungliga Tekniska H<>gskolan
|
||||||
|
* (Royal Institute of Technology, Stockholm, Sweden).
|
||||||
|
* All rights reserved.
|
||||||
|
*
|
||||||
|
* Redistribution and use in source and binary forms, with or without
|
||||||
|
* modification, are permitted provided that the following conditions
|
||||||
|
* are met:
|
||||||
|
*
|
||||||
|
* 1. Redistributions of source code must retain the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer.
|
||||||
|
*
|
||||||
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||||||
|
* notice, this list of conditions and the following disclaimer in the
|
||||||
|
* documentation and/or other materials provided with the distribution.
|
||||||
|
*
|
||||||
|
* 3. All advertising materials mentioning features or use of this software
|
||||||
|
* must display the following acknowledgement:
|
||||||
|
* This product includes software developed by the Kungliga Tekniska
|
||||||
|
* H<>gskolan and its contributors.
|
||||||
|
*
|
||||||
|
* 4. Neither the name of the Institute nor the names of its contributors
|
||||||
|
* may be used to endorse or promote products derived from this software
|
||||||
|
* without specific prior written permission.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||||
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||||
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||||
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||||
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||||
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||||
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||||
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||||
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||||
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||||
|
* SUCH DAMAGE.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifdef HAVE_CONFIG_H
|
||||||
|
#include <config.h>
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||||||
|
RCSID("$Id$");
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include "roken.h"
|
||||||
|
|
||||||
|
/*
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||||||
|
* uses hints->ai_socktype and hints->ai_protocol
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||||||
|
*/
|
||||||
|
|
||||||
|
static int
|
||||||
|
get_port_protocol_socktype (const char *servname,
|
||||||
|
const struct addrinfo *hints,
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||||||
|
int *port,
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||||||
|
int *protocol,
|
||||||
|
int *socktype)
|
||||||
|
{
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||||||
|
struct servent *se;
|
||||||
|
const char *proto_str = NULL;
|
||||||
|
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||||||
|
*socktype = 0;
|
||||||
|
|
||||||
|
if (hints != NULL && hints->ai_protocol != 0) {
|
||||||
|
struct protoent *protoent = getprotobynumber (hints->ai_protocol);
|
||||||
|
|
||||||
|
if (protoent == NULL)
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||||||
|
return EAI_SOCKTYPE; /* XXX */
|
||||||
|
|
||||||
|
proto_str = protoent->p_name;
|
||||||
|
*protocol = protoent->p_proto;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (hints != NULL)
|
||||||
|
*socktype = hints->ai_socktype;
|
||||||
|
|
||||||
|
if (*socktype == SOCK_STREAM) {
|
||||||
|
se = getservbyname (servname, proto_str ? proto_str : "tcp");
|
||||||
|
if (proto_str == NULL)
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||||||
|
*protocol = IPPROTO_TCP;
|
||||||
|
} else if (*socktype == SOCK_DGRAM) {
|
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|
se = getservbyname (servname, proto_str ? proto_str : "udp");
|
||||||
|
if (proto_str == NULL)
|
||||||
|
*protocol = IPPROTO_UDP;
|
||||||
|
} else if (*socktype == 0) {
|
||||||
|
if (proto_str != NULL) {
|
||||||
|
se = getservbyname (servname, proto_str);
|
||||||
|
} else {
|
||||||
|
se = getservbyname (servname, "tcp");
|
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|
*protocol = IPPROTO_TCP;
|
||||||
|
*socktype = SOCK_STREAM;
|
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|
if (se == NULL) {
|
||||||
|
se = getservbyname (servname, "udp");
|
||||||
|
*protocol = IPPROTO_UDP;
|
||||||
|
*socktype = SOCK_DGRAM;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
} else
|
||||||
|
return EAI_SOCKTYPE;
|
||||||
|
|
||||||
|
if (se == NULL) {
|
||||||
|
char *endstr;
|
||||||
|
|
||||||
|
*port = htons(strtol (servname, &endstr, 10));
|
||||||
|
if (servname == endstr)
|
||||||
|
return EAI_NONAME;
|
||||||
|
} else {
|
||||||
|
*port = se->s_port;
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
add_one (int port, int protocol, int socktype,
|
||||||
|
struct addrinfo ***ptr,
|
||||||
|
int (*func)(struct addrinfo *, void *data, int port),
|
||||||
|
void *data,
|
||||||
|
char *canonname)
|
||||||
|
{
|
||||||
|
struct addrinfo *a;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
a = malloc (sizeof (*a));
|
||||||
|
if (a == NULL)
|
||||||
|
return EAI_MEMORY;
|
||||||
|
memset (a, 0, sizeof(*a));
|
||||||
|
a->ai_flags = 0;
|
||||||
|
a->ai_next = NULL;
|
||||||
|
a->ai_protocol = protocol;
|
||||||
|
a->ai_socktype = socktype;
|
||||||
|
a->ai_canonname = canonname;
|
||||||
|
ret = (*func)(a, data, port);
|
||||||
|
if (ret) {
|
||||||
|
free (a);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
**ptr = a;
|
||||||
|
*ptr = &a->ai_next;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
const_v4 (struct addrinfo *a, void *data, int port)
|
||||||
|
{
|
||||||
|
struct sockaddr_in *sin;
|
||||||
|
struct in_addr *addr = (struct in_addr *)data;
|
||||||
|
|
||||||
|
a->ai_family = PF_INET;
|
||||||
|
a->ai_addrlen = sizeof(sizeof(*sin));
|
||||||
|
a->ai_addr = malloc (sizeof(*sin));
|
||||||
|
if (a->ai_addr == NULL)
|
||||||
|
return EAI_MEMORY;
|
||||||
|
sin = (struct sockaddr_in *)a->ai_addr;
|
||||||
|
memset (sin, 0, sizeof(*sin));
|
||||||
|
sin->sin_family = AF_INET;
|
||||||
|
sin->sin_port = port;
|
||||||
|
sin->sin_addr = *addr;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef HAVE_IPV6
|
||||||
|
static int
|
||||||
|
const_v6 (struct addrinfo *a, void *data, int port)
|
||||||
|
{
|
||||||
|
struct sockaddr_in6 *sin6;
|
||||||
|
struct in6_addr *addr = (struct in6_addr *)data;
|
||||||
|
|
||||||
|
a->ai_family = PF_INET6;
|
||||||
|
a->ai_addrlen = sizeof(sizeof(*sin6));
|
||||||
|
a->ai_addr = malloc (sizeof(*sin6));
|
||||||
|
if (a->ai_addr == NULL)
|
||||||
|
return EAI_MEMORY;
|
||||||
|
sin6 = (struct sockaddr_in6 *)a->ai_addr;
|
||||||
|
memset (sin6, 0, sizeof(*sin6));
|
||||||
|
sin6->sin6_family = AF_INET6;
|
||||||
|
sin6->sin6_port = port;
|
||||||
|
sin6->sin6_addr = *addr;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
static int
|
||||||
|
get_null (const struct addrinfo *hints,
|
||||||
|
int port, int protocol, int socktype,
|
||||||
|
struct addrinfo **res)
|
||||||
|
{
|
||||||
|
struct in_addr v4_addr;
|
||||||
|
#ifdef HAVE_IPV6
|
||||||
|
struct in6_addr v6_addr;
|
||||||
|
#endif
|
||||||
|
struct addrinfo *first = NULL;
|
||||||
|
struct addrinfo **current = &first;
|
||||||
|
int family = PF_UNSPEC;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
if (hints != NULL)
|
||||||
|
family = hints->ai_family;
|
||||||
|
|
||||||
|
if (hints && hints->ai_flags & AI_PASSIVE) {
|
||||||
|
v4_addr.s_addr = INADDR_ANY;
|
||||||
|
#ifdef HAVE_IPV6
|
||||||
|
v6_addr = in6addr_any;
|
||||||
|
#endif
|
||||||
|
} else {
|
||||||
|
v4_addr.s_addr = INADDR_LOOPBACK;
|
||||||
|
#ifdef HAVE_IPV6
|
||||||
|
v6_addr = in6addr_loopback;
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef HAVE_IPV6
|
||||||
|
if (family == PF_INET6 || family == PF_UNSPEC) {
|
||||||
|
ret = add_one (port, protocol, socktype,
|
||||||
|
¤t, const_v6, &v6_addr, NULL);
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
if (family == PF_INET || family == PF_UNSPEC) {
|
||||||
|
ret = add_one (port, protocol, socktype,
|
||||||
|
¤t, const_v4, &v4_addr, NULL);
|
||||||
|
}
|
||||||
|
*res = first;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
add_hostent (int port, int protocol, int socktype,
|
||||||
|
struct addrinfo ***current,
|
||||||
|
int (*func)(struct addrinfo *, void *data, int port),
|
||||||
|
struct hostent *he, int *flags)
|
||||||
|
{
|
||||||
|
char **h;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
for (h = he->h_addr_list; *h != NULL; ++h) {
|
||||||
|
char *canonname = NULL;
|
||||||
|
|
||||||
|
if (*flags & AI_CANONNAME) {
|
||||||
|
canonname = strdup (he->h_name);
|
||||||
|
if (canonname == NULL)
|
||||||
|
return ENOMEM;
|
||||||
|
*flags &= ~AI_CANONNAME;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = add_one (port, protocol, socktype,
|
||||||
|
current, func, *h, canonname);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
get_number (const char *nodename,
|
||||||
|
const struct addrinfo *hints,
|
||||||
|
int port, int protocol, int socktype,
|
||||||
|
struct addrinfo **res)
|
||||||
|
{
|
||||||
|
struct addrinfo *first = NULL;
|
||||||
|
struct addrinfo **current = &first;
|
||||||
|
int family = PF_UNSPEC;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
if (hints != NULL) {
|
||||||
|
family = hints->ai_family;
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef HAVE_IPV6
|
||||||
|
if (family == PF_INET6 || family == PF_UNSPEC) {
|
||||||
|
struct in6_addr v6_addr;
|
||||||
|
|
||||||
|
if (inet_pton (PF_INET6, nodename, &v6_addr) == 1) {
|
||||||
|
ret = add_one (port, protocol, socktype,
|
||||||
|
¤t, const_v6, &v6_addr, NULL);
|
||||||
|
*res = first;
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
if (family == PF_INET || family == PF_UNSPEC) {
|
||||||
|
struct in_addr v4_addr;
|
||||||
|
|
||||||
|
if (inet_pton (PF_INET, nodename, &v4_addr) == 1) {
|
||||||
|
ret = add_one (port, protocol, socktype,
|
||||||
|
¤t, const_v4, &v4_addr, NULL);
|
||||||
|
*res = first;
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return EAI_NONAME;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
get_nodes (const char *nodename,
|
||||||
|
const struct addrinfo *hints,
|
||||||
|
int port, int protocol, int socktype,
|
||||||
|
struct addrinfo **res)
|
||||||
|
{
|
||||||
|
struct addrinfo *first = NULL;
|
||||||
|
struct addrinfo **current = &first;
|
||||||
|
int family = PF_UNSPEC;
|
||||||
|
int flags = 0;
|
||||||
|
int ret = EAI_NONAME;
|
||||||
|
|
||||||
|
if (hints != NULL) {
|
||||||
|
family = hints->ai_family;
|
||||||
|
flags = hints->ai_flags;
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef HAVE_IPV6
|
||||||
|
if (family == PF_INET6 || family == PF_UNSPEC) {
|
||||||
|
struct hostent *he;
|
||||||
|
|
||||||
|
he = gethostbyname2 (nodename, PF_INET6);
|
||||||
|
|
||||||
|
if (he != NULL)
|
||||||
|
ret = add_hostent (port, protocol, socktype,
|
||||||
|
¤t, const_v6, he, &flags);
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
if (family == PF_INET || family == PF_UNSPEC) {
|
||||||
|
struct hostent *he;
|
||||||
|
|
||||||
|
he = gethostbyname (nodename);
|
||||||
|
|
||||||
|
if (he != NULL)
|
||||||
|
ret = add_hostent (port, protocol, socktype,
|
||||||
|
¤t, const_v4, he, &flags);
|
||||||
|
}
|
||||||
|
*res = first;
|
||||||
|
if (ret == EAI_NONAME)
|
||||||
|
return get_number (nodename, hints, port, protocol, socktype, res);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* hints:
|
||||||
|
*
|
||||||
|
* struct addrinfo {
|
||||||
|
* int ai_flags;
|
||||||
|
* int ai_family;
|
||||||
|
* int ai_socktype;
|
||||||
|
* int ai_protocol;
|
||||||
|
* ...
|
||||||
|
* };
|
||||||
|
*/
|
||||||
|
|
||||||
|
int
|
||||||
|
getaddrinfo(const char *nodename,
|
||||||
|
const char *servname,
|
||||||
|
const struct addrinfo *hints,
|
||||||
|
struct addrinfo **res)
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
int port = 0;
|
||||||
|
int protocol = 0;
|
||||||
|
int socktype = 0;
|
||||||
|
|
||||||
|
*res = NULL;
|
||||||
|
|
||||||
|
if (servname == NULL && nodename == NULL)
|
||||||
|
return EAI_NONAME;
|
||||||
|
|
||||||
|
if (hints != NULL
|
||||||
|
&& hints->ai_family != PF_UNSPEC
|
||||||
|
&& hints->ai_family != PF_INET
|
||||||
|
#ifdef HAVE_IPV6
|
||||||
|
&& hints->ai_family != PF_INET6
|
||||||
|
#endif
|
||||||
|
)
|
||||||
|
return EAI_FAMILY;
|
||||||
|
|
||||||
|
if (servname != NULL) {
|
||||||
|
ret = get_port_protocol_socktype (servname, hints,
|
||||||
|
&port, &protocol, &socktype);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
if (nodename != NULL) {
|
||||||
|
if (hints && hints->ai_flags & AI_NUMERICHOST)
|
||||||
|
ret = get_number (nodename, hints, port, protocol, socktype, res);
|
||||||
|
else
|
||||||
|
ret = get_nodes (nodename, hints, port, protocol, socktype, res);
|
||||||
|
} else {
|
||||||
|
ret = get_null (hints, port, protocol, socktype, res);
|
||||||
|
}
|
||||||
|
if (ret)
|
||||||
|
freeaddrinfo (*res);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
Reference in New Issue
Block a user